Buffer overflow in Microsoft Windows 10 Version 1607
CVE-2026-68876
Heap-based buffer overflow in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges over a network.
Vulnerability class: Buffer Overflow
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Microsoft Windows 10 Version 1607
- Microsoft Windows 10 Version 1809
- Microsoft Windows 10 Version 21h2
- Microsoft Windows 10 Version 22h2
- Microsoft Windows 11 Version 23h2
- Microsoft Windows 11 Version 24h2
- Microsoft Windows 11 Version 25h2
- Microsoft Windows 11 Version 26h1
- Microsoft Windows Server 2012
- Microsoft Windows Server 2012 R2
Weakness classification (CWE)
References
- secure@microsoft.com (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2026-68876?
- CVE-2026-68876 is a high-severity vulnerability in Microsoft Windows 10 Version 1607, classified under Heap-based Buffer Overflow. CVSS score: 8.0/10. Published 2026-09-08.
- How severe is CVE-2026-68876?
- High severity. CVSS v3 base score is 8.0 out of 10.