CVE-2026-97803

Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

Score

CVSS 3.1 7.8 High

Status

Analyzed - secure@microsoft.com

Published

2026-10-13

Last modified

2026-10-28

Weaknesses

CWE-122

Affected products

• Windows 11 26H1 (Microsoft)
• Windows 11 26h1 (Microsoft)

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97803