CVE-2017-8540 KEV EXPLOIT
7.8
HIGH · CVSS 3.1 · EPSS 71.9% (pctl 99)
Patch first
On CISA KEV — known exploited in the wild, due 2022-03-24.
Description
The Microsoft Malware Protection Engine running on Microsoft Forefront and Microsoft Defender on 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, and Windows Server 2016, Microsoft Exchange Server 2013 and 2016, does not properly scan a specially crafted file leading to memory corruption. aka "Microsoft Malware Protection Engine Remote Code Execution Vulnerability", a different vulnerability than CVE-2017-8538 and CVE-2017-8541.
Scoring
| CVSS | 7.8 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| EPSS | 71.87% — more likely to be exploited than 99% of all CVEs |
| Weakness | CWE-787 |
| On CISA KEV | yes — remediate by 2022-03-24 |
| Public exploit | yes |
| Published | 2017-05-26 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | Microsoft Malware Protection Engine Improper Restriction of Operations Vulnerability |
|---|---|
| Added | 2022-03-03 |
| Due | 2022-03-24 |
| Vendor / product | Microsoft / Malware Protection Engine |
| Ransomware use | none reported |
Affected (19)
| Vendor | Product |
|---|---|
| microsoft | endpoint protection |
| microsoft | exchange server |
| microsoft | forefront endpoint protection |
| microsoft | forefront security |
| microsoft | intune endpoint protection |
| microsoft | malware protection engine |
| microsoft | security essentials |
| microsoft | system center endpoint protection |
| microsoft | windows 10 1507 |
| microsoft | windows 10 1511 |
| microsoft | windows 10 1607 |
| microsoft | windows 10 1703 |
| microsoft | windows 7 |
| microsoft | windows 8.1 |
| microsoft | windows defender |
| microsoft | windows rt 8.1 |
| microsoft | windows server 2008 |
| microsoft | windows server 2012 |
| microsoft | windows server 2016 |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Microsoft MsMpEng - Remote Use-After-Free Due to Design Issue in GC Engine | 2017-05-30 |
References
- http://www.securityfocus.com/bid/98703
- http://www.securitytracker.com/id/1038571
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8540
- https://www.exploit-db.com/exploits/42088/
- http://www.securityfocus.com/bid/98703
- http://www.securitytracker.com/id/1038571
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8540
- https://www.exploit-db.com/exploits/42088/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-8540
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