Buffer overflow in Microsoft Exchange Server
CVE-2017-8538
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-2017-8540 and CVE-2017-8541.
Vulnerability class: Buffer Overflow
EPSS: 0.503 (98.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Microsoft Exchange_server — versions 2013, 2016
- Microsoft Forefront_security
- Microsoft Malware_protection_engine
- Microsoft Windows_10 — versions 1511, 1607, 1703
- Microsoft Windows_7
- Microsoft Windows_8.1
- Microsoft Windows_defender
- Microsoft Windows_rt_8.1
- Microsoft Windows_server_2008 — versions r2
- Microsoft Windows_server_2012 — versions r2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secure@microsoft.com (exploit, x_refsource_EXPLOIT-DB)
- secure@microsoft.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- secure@microsoft.com (x_refsource_CONFIRM, Vendor Advisory)
- secure@microsoft.com (vdb-entry, x_refsource_SECTRACK)
Frequently asked questions
- What is CVE-2017-8538?
- CVE-2017-8538 is a high-severity vulnerability in Microsoft Exchange Server, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2017-05-26.
- How severe is CVE-2017-8538?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2017-8538 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.