Buffer overflow in Microsoft Endpoint Protection
CVE-2017-8540
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.719 (99.4th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.719 · newest: 0.719 · change: 0.000
Affected products
- Microsoft Endpoint Protection
- Microsoft Exchange Server — versions 2013, 2016
- Microsoft Forefront Endpoint Protection — versions 2010
- 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
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8540 (Patch, Mitigation, Vendor Advisory)
- www.securityfocus.com/bid/98703 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
- www.exploit-db.com/exploits/42088/ (Exploit, VDB Entry, Third Party Advisory, exploit)
- www.securitytracker.com/id/1038571 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2017-8540?
- CVE-2017-8540 is a high-severity vulnerability in Microsoft Endpoint Protection, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2017-05-26.
- How severe is CVE-2017-8540?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2017-8540 known to be exploited?
- Yes. CVE-2017-8540 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-03), indicating it is being actively exploited. 4 public proof-of-concept repositories are indexed.