Out-of-bounds Read in Microsoft Windows 10 Version 1607
CVE-2026-77887
Out-of-bounds read in Windows DHCP Server allows an authorized attacker to execute code locally.
Vulnerability class: Buffer Overflow
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Microsoft Windows 10 Version 1607
- Microsoft Windows 10 Version 1809
- Microsoft Windows Server 2012
- Microsoft Windows Server 2012 R2
- Microsoft Windows Server 2012 R2 (Server Core Installation)
- Microsoft Windows Server 2012 (Server Core Installation)
- Microsoft Windows Server 2016
- Microsoft Windows Server 2016 (Server Core Installation)
- Microsoft Windows Server 2019
- Microsoft Windows Server 2019 (Server Core Installation)
Weakness classification (CWE)
References
- secure@microsoft.com (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2026-77887?
- CVE-2026-77887 is a medium-severity vulnerability in Microsoft Windows 10 Version 1607, classified under Out-of-bounds Read. CVSS score: 6.4/10. Published 2026-09-08.
- How severe is CVE-2026-77887?
- Medium severity. CVSS v3 base score is 6.4 out of 10.