CVE-2017-8558 EXPLOIT
7.8
HIGH · CVSS 3.0 · EPSS 43.6% (pctl 99)
Patch early
A public exploit exists.
Description
The Microsoft Malware Protection Engine running on Microsoft Forefront and Microsoft Defender on 32-bit versions of Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, and 1703 does not properly scan a specially crafted file leading to memory corruption. aka "Microsoft Malware Protection Engine Remote Code Execution Vulnerability".
Scoring
| CVSS | 7.8 (HIGH, v3.0) |
|---|---|
| Vector | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 43.59% — more likely to be exploited than 99% of all CVEs |
| Weakness | CWE-119 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2017-06-29 |
| Last modified | 2026-06-17 |
Affected (9)
| Vendor | Product |
|---|---|
| microsoft | endpoint protection |
| microsoft | forefront endpoint protection |
| microsoft | security essentials |
| microsoft | windows 10 |
| microsoft | windows 7 |
| microsoft | windows 8.1 |
| microsoft | windows defender |
| microsoft | windows intune endpoint protection |
| microsoft | windows server 2008 |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Microsoft MsMpEng - mpengine x86 Emulator Heap Corruption in VFS API | 2017-06-27 |
References
- http://www.securityfocus.com/bid/99262
- http://www.securitytracker.com/id/1038783
- http://www.securitytracker.com/id/1038784
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8558
- https://www.exploit-db.com/exploits/42264/
- http://www.securityfocus.com/bid/99262
- http://www.securitytracker.com/id/1038783
- http://www.securitytracker.com/id/1038784
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8558
- https://www.exploit-db.com/exploits/42264/
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