CVE-2021-3972 : Detail

CVE-2021-3972

6.7
/
Medium
0.04%V3
Local
2022-04-22
18h30 +00:00
2024-08-03
17h09 +00:00
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CVE Descriptions

A potential vulnerability by a driver used during manufacturing process on some consumer Lenovo Notebook devices' BIOS that was mistakenly not deactivated may allow an attacker with elevated privileges to modify secure boot setting by modifying an NVRAM variable.

CVE Solutions

Update system firmware to the version (or newer) indicated for your model in the Product Impact section of LEN-73440.

CVE Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-489 Active Debug Code
The product is deployed to unauthorized actors with debugging code still enabled or active, which can create unintended entry points or expose sensitive information.

Metrics

Metrics Score Severity CVSS Vector Source
V3.1 6.7 MEDIUM CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Base: Exploitabilty Metrics

The Exploitability metrics reflect the characteristics of the thing that is vulnerable, which we refer to formally as the vulnerable component.

Attack Vector

This metric reflects the context by which vulnerability exploitation is possible.

Local

The vulnerable component is not bound to the network stack and the attacker’s path is via read/write/execute capabilities.

Attack Complexity

This metric describes the conditions beyond the attacker’s control that must exist in order to exploit the vulnerability.

Low

Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success when attacking the vulnerable component.

Privileges Required

This metric describes the level of privileges an attacker must possess before successfully exploiting the vulnerability.

High

The attacker requires privileges that provide significant (e.g., administrative) control over the vulnerable component allowing access to component-wide settings and files.

User Interaction

This metric captures the requirement for a human user, other than the attacker, to participate in the successful compromise of the vulnerable component.

None

The vulnerable system can be exploited without interaction from any user.

Base: Scope Metrics

The Scope metric captures whether a vulnerability in one vulnerable component impacts resources in components beyond its security scope.

Scope

Formally, a security authority is a mechanism (e.g., an application, an operating system, firmware, a sandbox environment) that defines and enforces access control in terms of how certain subjects/actors (e.g., human users, processes) can access certain restricted objects/resources (e.g., files, CPU, memory) in a controlled manner. All the subjects and objects under the jurisdiction of a single security authority are considered to be under one security scope. If a vulnerability in a vulnerable component can affect a component which is in a different security scope than the vulnerable component, a Scope change occurs. Intuitively, whenever the impact of a vulnerability breaches a security/trust boundary and impacts components outside the security scope in which vulnerable component resides, a Scope change occurs.

Unchanged

An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.

Base: Impact Metrics

The Impact metrics capture the effects of a successfully exploited vulnerability on the component that suffers the worst outcome that is most directly and predictably associated with the attack. Analysts should constrain impacts to a reasonable, final outcome which they are confident an attacker is able to achieve.

Confidentiality Impact

This metric measures the impact to the confidentiality of the information resources managed by a software component due to a successfully exploited vulnerability.

High

There is a total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact. For example, an attacker steals the administrator's password, or private encryption keys of a web server.

Integrity Impact

This metric measures the impact to integrity of a successfully exploited vulnerability. Integrity refers to the trustworthiness and veracity of information.

High

There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.

Availability Impact

This metric measures the impact to the availability of the impacted component resulting from a successfully exploited vulnerability.

High

There is a total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Temporal Metrics

The Temporal metrics measure the current state of exploit techniques or code availability, the existence of any patches or workarounds, or the confidence in the description of a vulnerability.

Environmental Metrics

These metrics enable the analyst to customize the CVSS score depending on the importance of the affected IT asset to a user’s organization, measured in terms of Confidentiality, Integrity, and Availability.
V2 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P nvd@nist.gov

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
EPSS First.org

Products Mentioned

Configuraton 0

Lenovo>>Ideapad_3-14ada05_firmware >> Version To (excluding) e8cn33ww

    Lenovo>>Ideapad_3-14ada05 >> Version -

    Configuraton 0

    Lenovo>>Ideapad_3-14ada6_firmware >> Version To (excluding) hbcn21ww

      Lenovo>>Ideapad_3-14ada6 >> Version -

      Configuraton 0

      Lenovo>>Ideapad_3-14alc6_firmware >> Version To (excluding) glcn43ww

        Lenovo>>Ideapad_3-14alc6 >> Version -

        Configuraton 0

        Lenovo>>Ideapad_3-14are05_firmware >> Version To (excluding) dzcn42ww

        Lenovo>>Ideapad_3-14are05 >> Version -

        Configuraton 0

        Lenovo>>Ideapad_3-15ada6_firmware >> Version To (excluding) hbcn21ww

          Lenovo>>Ideapad_3-15ada6 >> Version -

          Configuraton 0

          Lenovo>>Ideapad_3-15alc6_firmware >> Version To (excluding) glcn43ww

            Lenovo>>Ideapad_3-15alc6 >> Version -

            Configuraton 0

            Lenovo>>Ideapad_3-15are05_firmware >> Version To (excluding) dzcn42ww

            Lenovo>>Ideapad_3-15are05 >> Version -

            Configuraton 0

            Lenovo>>Ideapad_3-15igl05_firmware >> Version To (excluding) dvcn23ww

            Lenovo>>Ideapad_3-15igl05 >> Version -

            Configuraton 0

            Lenovo>>Ideapad_3-17ada05_firmware >> Version To (excluding) e8cn33ww

              Lenovo>>Ideapad_3-17ada05 >> Version -

              Configuraton 0

              Lenovo>>Ideapad_3-17ada6_firmware >> Version To (excluding) hbcn21ww

                Lenovo>>Ideapad_3-17ada6 >> Version -

                Configuraton 0

                Lenovo>>Ideapad_3-17alc6_firmware >> Version To (excluding) glcn43ww

                  Lenovo>>Ideapad_3-17alc6 >> Version -

                  Configuraton 0

                  Lenovo>>Ideapad_3-17are05_firmware >> Version To (excluding) dzcn42ww

                  Lenovo>>Ideapad_3-17are05 >> Version -

                  Configuraton 0

                  Lenovo>>Ideapad_3-17iil05_firmware >> Version To (excluding) emcn52ww

                  Lenovo>>Ideapad_3-17iil05 >> Version -

                  Configuraton 0

                  Lenovo>>Ideapad_3-17itl6_firmware >> Version To (excluding) ggcn33ww

                  Lenovo>>Ideapad_3-17itl6 >> Version -

                  Configuraton 0

                  Lenovo>>Ideapad_3-15ada05_firmware >> Version To (excluding) e8cn33ww

                    Lenovo>>Ideapad_3-15ada05 >> Version -

                    Configuraton 0

                    Lenovo>>L3_15iml05_firmware >> Version To (excluding) ejcn27ww

                    Lenovo>>L3_15iml05 >> Version -

                    Configuraton 0

                    Lenovo>>L3-15itl6_firmware >> Version To (excluding) gfcn23ww

                    Lenovo>>L3-15itl6 >> Version -

                    Configuraton 0

                    Lenovo>>L340-15irh_firmware >> Version To (excluding) bgcn35ww

                    Lenovo>>L340-15irh >> Version -

                    Configuraton 0

                    Lenovo>>L340-15iwl_firmware >> Version To (excluding) atcn46ww

                    Lenovo>>L340-15iwl >> Version -

                    Configuraton 0

                    Lenovo>>L340-15iwl_touch_firmware >> Version To (excluding) atcn46ww

                    Lenovo>>L340-15iwl_touch >> Version -

                    Configuraton 0

                    Lenovo>>L340-17irh_firmware >> Version To (excluding) bgcn35ww

                    Lenovo>>L340-17irh >> Version -

                    Configuraton 0

                    Lenovo>>L340-17iwl_firmware >> Version To (excluding) atcn46ww

                    Lenovo>>L340-17iwl >> Version -

                    Configuraton 0

                    Lenovo>>Legion_5_pro-16ach6_firmware >> Version To (excluding) hhcn25ww

                    Lenovo>>Legion_5_pro-16ach6 >> Version -

                    Configuraton 0

                    Lenovo>>Legion_5_pro-16ach6h_firmware >> Version To (excluding) gkcn51ww

                    Lenovo>>Legion_5_pro-16ach6h >> Version -

                    Configuraton 0

                    Lenovo>>Legion_5_pro-16ith6_firmware >> Version To (excluding) h1cn46ww

                    Lenovo>>Legion_5_pro-16ith6 >> Version -

                    Configuraton 0

                    Lenovo>>Legion_5_pro-16ith6h_firmware >> Version To (excluding) h1cn46ww

                    Lenovo>>Legion_5_pro-16ith6h >> Version -

                    Configuraton 0

                    Lenovo>>Legion_5-15ach6_firmware >> Version To (excluding) hhcn25ww

                    Lenovo>>Legion_5-15ach6 >> Version -

                    Configuraton 0

                    Lenovo>>Legion_5-15ach6a_firmware >> Version To (excluding) g9cn28ww

                    Lenovo>>Legion_5-15ach6a >> Version -

                    Configuraton 0

                    Lenovo>>Legion_5-15ach6h_firmware >> Version To (excluding) gkcn51ww

                    Lenovo>>Legion_5-15ach6h >> Version -

                    Configuraton 0

                    Lenovo>>Legion_5-15imh6_firmware >> Version To (excluding) g8cn19ww

                    Lenovo>>Legion_5-15imh6 >> Version -

                    Configuraton 0

                    Lenovo>>Legion_5-15ith6_firmware >> Version To (excluding) h1cn46ww

                    Lenovo>>Legion_5-15ith6 >> Version -

                    Configuraton 0

                    Lenovo>>Legion_5-15ith6h_firmware >> Version To (excluding) h1cn46ww

                    Lenovo>>Legion_5-15ith6h >> Version -

                    Configuraton 0

                    Lenovo>>Legion_5-17ach6_firmware >> Version To (excluding) hhcn25ww

                    Lenovo>>Legion_5-17ach6 >> Version -

                    Configuraton 0

                    Lenovo>>Legion_5-17ach6h_firmware >> Version To (excluding) gkcn51ww

                    Lenovo>>Legion_5-17ach6h >> Version -

                    Configuraton 0

                    Lenovo>>Legion_5-17ith6_firmware >> Version To (excluding) h1cn46ww

                    Lenovo>>Legion_5-17ith6 >> Version -

                    Configuraton 0

                    Lenovo>>Legion_5-17ith6h_firmware >> Version To (excluding) h1cn46ww

                    Lenovo>>Legion_5-17ith6h >> Version -

                    Configuraton 0

                    Lenovo>>Legion_7-16achg6_firmware >> Version To (excluding) gkcn51ww

                    Lenovo>>Legion_7-16achg6 >> Version -

                    Configuraton 0

                    Lenovo>>Legion_7-16ithg6_firmware >> Version To (excluding) gkcn51ww

                    Lenovo>>Legion_7-16ithg6 >> Version -

                    Configuraton 0

                    Lenovo>>Legion_s7-15ach6_firmware >> Version To (excluding) hacn35ww

                      Lenovo>>Legion_s7-15ach6 >> Version -

                      Configuraton 0

                      Lenovo>>Legion_y540-15irh_firmware >> Version To (excluding) bhcn44ww

                      Lenovo>>Legion_y540-15irh >> Version -

                      Configuraton 0

                      Lenovo>>Legion_y540-15irh-pg0_firmware >> Version To (excluding) bhcn44ww

                      Lenovo>>Legion_y540-15irh-pg0 >> Version -

                      Configuraton 0

                      Lenovo>>Legion_y540-17irh_firmware >> Version To (excluding) bhcn44ww

                      Lenovo>>Legion_y540-17irh >> Version -

                      Configuraton 0

                      Lenovo>>Legion_y540-17irh-pg0_firmware >> Version To (excluding) bhcn44ww

                      Lenovo>>Legion_y540-17irh-pg0 >> Version -

                      Configuraton 0

                      Lenovo>>Legion_y545_firmware >> Version To (excluding) bhcn44ww

                      Lenovo>>Legion_y545 >> Version -

                      Configuraton 0

                      Lenovo>>Legion_y545-pg0_firmware >> Version To (excluding) bhcn44ww

                      Lenovo>>Legion_y545-pg0 >> Version -

                      Configuraton 0

                      Lenovo>>Legion_y7000-2019_firmware >> Version To (excluding) bhcn44ww

                      Lenovo>>Legion_y7000-2019 >> Version -

                      Configuraton 0

                      Lenovo>>Legion_y7000-2019-pg0_firmware >> Version To (excluding) bhcn44ww

                      Lenovo>>Legion_y7000-2019-pg0 >> Version -

                      Configuraton 0

                      Lenovo>>S14_g2_itl_firmware >> Version To (excluding) ggcn33ww

                      Lenovo>>S14_g2_itl >> Version -

                      Configuraton 0

                      Lenovo>>S145-14api_firmware >> Version To (excluding) bucn31ww

                      Lenovo>>S145-14api >> Version -

                      Configuraton 0

                      Lenovo>>S145-14ast_firmware >> Version To (excluding) aycn26ww

                      Lenovo>>S145-14ast >> Version -

                      Configuraton 0

                      Lenovo>>S145-14igm_firmware >> Version To (excluding) awcn28ww

                      Lenovo>>S145-14igm >> Version -

                      Configuraton 0

                      Lenovo>>S145-14iil_firmware >> Version To (excluding) dkcn54ww

                        Lenovo>>S145-14iil >> Version -

                        Configuraton 0

                        Lenovo>>S145-15api_firmware >> Version To (excluding) bucn31ww

                        Lenovo>>S145-15api >> Version -

                        Configuraton 0

                        Lenovo>>S145-15ast_firmware >> Version To (excluding) aycn26ww

                        Lenovo>>S145-15ast >> Version -

                        Configuraton 0

                        Lenovo>>S145-15igm_firmware >> Version To (excluding) awcn28ww

                        Lenovo>>S145-15igm >> Version -

                        Configuraton 0

                        Lenovo>>S145-15iil_firmware >> Version To (excluding) dkcn54ww

                          Lenovo>>S145-15iil >> Version -

                          Configuraton 0

                          Lenovo>>S540-13api_firmware >> Version To (excluding) cxcn34ww

                          Lenovo>>S540-13api >> Version -

                          Configuraton 0

                          Lenovo>>S540-13iml_firmware >> Version -

                          Lenovo>>S540-13iml >> Version -

                          Configuraton 0

                          Lenovo>>Slim_7_pro-14ihu5_firmware >> Version -

                          Lenovo>>Slim_7_pro-14ihu5 >> Version -

                          Configuraton 0

                          Lenovo>>Slim_9-14itl05_firmware >> Version -

                          Lenovo>>Slim_9-14itl05 >> Version -

                          Configuraton 0

                          Lenovo>>V14_g1-iml_firmware >> Version To (excluding) dxcn41ww

                          Lenovo>>V14_g1-iml >> Version -

                          Configuraton 0

                          Lenovo>>V14_g2-acl_firmware >> Version To (excluding) glcn43ww

                            Lenovo>>V14_g2-acl >> Version -

                            Configuraton 0

                            Lenovo>>V14_g2-itl_firmware >> Version To (excluding) ggcn33ww

                            Lenovo>>V14_g2-itl >> Version -

                            Configuraton 0

                            Lenovo>>V14-ada_firmware >> Version To (excluding) e8cn33ww

                              Lenovo>>V14-ada >> Version -

                              Configuraton 0

                              Lenovo>>V14-are_firmware >> Version To (excluding) dzcn42ww

                              Lenovo>>V14-are >> Version -

                              Configuraton 0

                              Lenovo>>V14-igl_firmware >> Version To (excluding) dvcn23ww

                              Lenovo>>V14-igl >> Version -

                              Configuraton 0

                              Lenovo>>V14-iil_firmware >> Version To (excluding) dkcn54ww

                                Lenovo>>V14-iil >> Version -

                                Configuraton 0

                                Lenovo>>V140-15iwl_firmware >> Version To (excluding) atcn46ww

                                Lenovo>>V140-15iwl >> Version -

                                Configuraton 0

                                Lenovo>>V15_g1-iml_firmware >> Version To (excluding) dxcn41ww

                                Lenovo>>V15_g1-iml >> Version -

                                Configuraton 0

                                Lenovo>>V15_g2-alc_firmware >> Version To (excluding) glcn43ww

                                  Lenovo>>V15_g2-alc >> Version -

                                  Configuraton 0

                                  Lenovo>>V15_g2-itl_firmware >> Version To (excluding) ggcn33ww

                                  Lenovo>>V15_g2-itl >> Version -

                                  Configuraton 0

                                  Lenovo>>V15-ada_firmware >> Version To (excluding) e8cn33ww

                                    Lenovo>>V15-ada >> Version -

                                    Configuraton 0

                                    Lenovo>>V15-igl_firmware >> Version To (excluding) dvcn23ww

                                    Lenovo>>V15-igl >> Version -

                                    Configuraton 0

                                    Lenovo>>V15-iil_firmware >> Version To (excluding) dkcn54ww

                                      Lenovo>>V15-iil >> Version -

                                      Configuraton 0

                                      Lenovo>>V17_g2-itl_firmware >> Version To (excluding) ggcn33ww

                                      Lenovo>>V17_g2-itl >> Version -

                                      Configuraton 0

                                      Lenovo>>V17-iil_firmware >> Version To (excluding) emcn52ww

                                      Lenovo>>V17-iil >> Version -

                                      Configuraton 0

                                      Lenovo>>V340-17iwl_firmware >> Version To (excluding) atcn46ww

                                      Lenovo>>V340-17iwl >> Version -

                                      Configuraton 0

                                      Lenovo>>Yoga_7-14acn6_firmware >> Version To (excluding) h9cn26ww

                                        Lenovo>>Yoga_7-14acn6 >> Version -

                                        Configuraton 0

                                        Lenovo>>Yoga_c740-14iml_firmware >> Version To (excluding) bncn44ww

                                        Lenovo>>Yoga_c740-14iml >> Version -

                                        Configuraton 0

                                        Lenovo>>Yoga_c740-15iml_firmware >> Version To (excluding) bncn44ww

                                        Lenovo>>Yoga_c740-15iml >> Version -

                                        Configuraton 0

                                        Lenovo>>Yoga_c940-14iil_firmware >> Version -

                                        Lenovo>>Yoga_c940-14iil >> Version -

                                        Configuraton 0

                                        Lenovo>>Yoga_slim_7_pro-14ach5_d_firmware >> Version To (excluding) hecn24ww

                                          Lenovo>>Yoga_slim_7_pro-14ach5_d >> Version -

                                          Configuraton 0

                                          Lenovo>>Yoga_slim_7_pro-14ach5_firmware >> Version To (excluding) gzcn27ww

                                            Lenovo>>Yoga_slim_7_pro-14ach5 >> Version -

                                            Configuraton 0

                                            Lenovo>>Yoga_slim_7_pro-14ach5_o_firmware >> Version To (excluding) gzcn27ww

                                              Lenovo>>Yoga_slim_7_pro-14ach5_o >> Version -

                                              Configuraton 0

                                              Lenovo>>Yoga_slim_7_pro-14ach5_od_firmware >> Version To (excluding) hecn24ww

                                                Lenovo>>Yoga_slim_7_pro-14ach5_od >> Version -

                                                Configuraton 0

                                                Lenovo>>Yoga_slim_7_pro-14arh5_firmware >> Version To (excluding) g7cn21ww

                                                  Lenovo>>Yoga_slim_7_pro-14arh5 >> Version -

                                                  Configuraton 0

                                                  Lenovo>>Yoga_slim_7_pro-14ihu5_firmware >> Version -

                                                  Lenovo>>Yoga_slim_7_pro-14ihu5 >> Version -

                                                  Configuraton 0

                                                  Lenovo>>Yoga_slim_7_pro-14ihu5_o_firmware >> Version -

                                                  Lenovo>>Yoga_slim_7_pro-14ihu5_o >> Version -

                                                  Configuraton 0

                                                  Lenovo>>Yoga_slim_7_pro-14itl5_firmware >> Version -

                                                  Lenovo>>Yoga_slim_7_pro-14itl5 >> Version -

                                                  Configuraton 0

                                                  Lenovo>>Yoga_slim_9-14itl05_firmware >> Version -

                                                  Lenovo>>Yoga_slim_9-14itl05 >> Version -

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                                                  Lenovo>>Ideapad_3-14iil05_firmware >> Version To (excluding) dvcn23ww

                                                  Lenovo>>Ideapad_3-14iil05 >> Version -

                                                  Configuraton 0

                                                  Lenovo>>Ideapad_3-14igl05_firmware >> Version To (excluding) emcn52ww

                                                  Lenovo>>Ideapad_3-14igl05 >> Version -

                                                  Configuraton 0

                                                  Lenovo>>Ideapad_3-14iml05_firmware >> Version To (excluding) dxcn41ww

                                                  Lenovo>>Ideapad_3-14iml05 >> Version -

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                                                  Lenovo>>Ideapad_3-14itl05_firmware >> Version To (excluding) gccn26ww

                                                  Lenovo>>Ideapad_3-14itl05 >> Version -

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                                                  Lenovo>>Ideapad_3-14itl6_firmware >> Version To (excluding) ggcn33ww

                                                  Lenovo>>Ideapad_3-14itl6 >> Version -

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                                                  Lenovo>>Ideapad_3-15iil05_firmware >> Version To (excluding) emcn52ww

                                                  Lenovo>>Ideapad_3-15iil05 >> Version -

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                                                  Lenovo>>Ideapad_3-15iml05_firmware >> Version To (excluding) dxcn41ww

                                                  Lenovo>>Ideapad_3-15iml05 >> Version -

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                                                  Lenovo>>Ideapad_3-15itl05_firmware >> Version To (excluding) gccn26ww

                                                  Lenovo>>Ideapad_3-15itl05 >> Version -

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                                                  Lenovo>>Ideapad_3-15itl6_firmware >> Version To (excluding) ggcn33ww

                                                  Lenovo>>Ideapad_3-15itl6 >> Version -

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                                                  Lenovo>>Ideapad_3-17iml05_firmware >> Version To (excluding) dxcn41ww

                                                  Lenovo>>Ideapad_3-17iml05 >> Version -

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                                                  Lenovo>>Ideapad_5-15are05_firmware >> Version To (excluding) e7cn44ww

                                                    Lenovo>>Ideapad_5-15are05 >> Version -

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                                                    Lenovo>>Ideapad_5-15iil05_firmware >> Version To (excluding) dpcn54ww

                                                    Lenovo>>Ideapad_5-15iil05 >> Version -

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                                                    Lenovo>>Ideapad_creator_5-15imh05_firmware >> Version To (excluding) egcn36ww

                                                    Lenovo>>Ideapad_creator_5-15imh05 >> Version -

                                                    Configuraton 0

                                                    Lenovo>>Ideapad_gaming_3-15arh05_firmware >> Version To (excluding) fccn17ww

                                                    Lenovo>>Ideapad_gaming_3-15arh05 >> Version -

                                                    Configuraton 0

                                                    Lenovo>>Ideapad_gaming_3-15imh05_firmware >> Version To (excluding) egcn36ww

                                                    Lenovo>>Ideapad_gaming_3-15imh05 >> Version -

                                                    References