CVE-2025-62458 Win32k Elevation of Privilege Vulnerability
A heap-based buffer overflow in Windows Win32K allows an authorized local attacker to elevate privileges.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-62458?
CVE-2025-62458 is a high-severity memory corruption vulnerability in Microsoft Windows 10 1607, published on 9 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.
Weakness: CWE-122
Which versions are affected by CVE-2025-62458?
It affects 10 products.
Products include Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 23h2, Microsoft Windows Server 2008 and 4 more.
How do I fix CVE-2025-62458?
No fix has been published for CVE-2025-62458 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-62458 being exploited?
There is no known exploitation of CVE-2025-62458 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 10 1607
- CVE-2026-33824 Microsoft Internet Key Exchange (IKE) Service Extensions Double Free
- CVE-2026-21510 Microsoft Windows Shell Protection Mechanism Failure
- CVE-2026-21513 Microsoft MSHTML Framework Protection Mechanism Failure
- CVE-2023-32049 Microsoft Windows Defender SmartScreen Security Feature Bypass
- CVE-2023-29360 Microsoft Streaming Service Untrusted Pointer Dereference
Sources
Also known as GHSA-qrpx-6mhp-fqx6.