CVE-2026-83757
HighCVSS 7.8Summary
Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges locally.
Risk Assessment
An authorized attacker could elevate privileges, potentially leading to full system control.
Recommendation
Apply security patches provided by the vendor.
Other vulnerabilities in Windows Win32K
See all- CVE-2026-85901High
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-2026-83732High
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.
- CVE-2026-33839High
A race condition in Windows Win32K allows an authorized attacker to locally elevate privileges due to improper synchronization during concurrent execution using shared resources.
Original NVD description (English source)
Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS