CVE-2026-69633
HighCVSS 7.8Summary
Heap-based buffer overflow in Windows Update allows an authorized attacker to elevate privileges locally.
Risk Assessment
An authorized user could exploit the buffer overflow to execute code with elevated privileges, leading to system takeover.
Recommendation
Install the latest security updates from Microsoft for Windows Update.
Other vulnerabilities in Windows Update
See all- CVE-2026-96323High
A use after free in Windows Update allows an authorized attacker to elevate privileges locally. The flaw exists in the Windows update mechanism.
- CVE-2026-69999Medium
Out-of-bounds read in Windows Update allows an authorized attacker to disclose information locally.
- CVE-2026-69882High
Untrusted search path in Windows Update allows an authorized attacker to elevate privileges locally.
- CVE-2026-69783High
External control of file name or path in Windows Update allows an authorized attacker to elevate privileges locally.
- CVE-2026-69733High
Untrusted search path in Windows Update allows an authorized attacker to elevate privileges locally.
- CVE-2026-69718High
Improper neutralization of special elements used in a command ('command injection') in Windows Update allows an authorized attacker to elevate privileges locally.
- CVE-2026-69673High
Improper link resolution before file access ('link following') in Windows Update allows an authorized attacker to elevate privileges locally.
Original NVD description (English source)
Heap-based buffer overflow in Windows Update allows an authorized attacker to elevate privileges locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS