CVE-2026-85858
HighCVSS 7.8Summary
Out-of-bounds read in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
Risk Assessment
An attacker could exploit the flaw to access unauthorized data in memory, potentially leading to privilege escalation and security breach.
Recommendation
Apply the latest Microsoft Windows security updates.
Other vulnerabilities in Windows Win32 Kernel Subsystem
See all- CVE-2026-96853Medium
Time-of-check time-of-use (toctou) race condition in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.
- CVE-2026-96848Medium
Buffer over-read in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.
- CVE-2026-96249High
Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
- CVE-2026-85804High
A use after free in the Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
- CVE-2026-85802High
A use after free in the Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
- CVE-2026-83909Medium
Exposure of sensitive system information to an unauthorized control sphere in the Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.
- CVE-2026-83901High
Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
- CVE-2026-83897Medium
A vulnerability in the Windows Win32 Kernel Subsystem allows exposure of sensitive system information to an unauthorized control sphere. An authorized attacker can disclose information locally.
- CVE-2026-83895Medium
A heap-based buffer overflow in the Windows Win32 Kernel Subsystem allows an unauthorized attacker to elevate privileges via a physical attack.
- CVE-2026-83774Medium
Exposure of sensitive system information to an unauthorized control sphere in the Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.
Original NVD description (English source)
Out-of-bounds read in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS