CVE-2026-33839
HighSummary
A race condition in Windows Win32K allows an authorized attacker to locally elevate privileges due to improper synchronization during concurrent execution using shared resources.
Risk Assessment
This vulnerability can be exploited by local users to gain elevated privileges, posing a significant security risk to the system.
Recommendation
It is recommended to update the operating system to the latest version to mitigate this vulnerability and to monitor system access for unauthorized activities.
Other vulnerabilities in Windows Win32K
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Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.
- CVE-2026-83883High
Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
- CVE-2026-83866High
Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
- CVE-2026-83841High
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K allows an authorized attacker to elevate privileges locally.
- CVE-2026-83762High
Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
- CVE-2026-83757High
Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges locally.
- CVE-2026-83732High
Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
- CVE-2026-83721High
A use after free vulnerability in Windows Win32K allows an authorized attacker to elevate privileges locally.
- CVE-2026-70286High
Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.
- CVE-2026-34347High
A use after free vulnerability in Windows Win32K allows an authorized attacker to elevate privileges locally.
Original NVD description (English source)
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS