CVE-2025-21317 Windows Kernel Memory Information Disclosure Vulnerability
An attacker can exploit a flaw in the Windows Kernel to disclose sensitive memory information, potentially aiding further attacks.
- 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-2025-21317?
CVE-2025-21317 is a medium-severity vulnerability in Microsoft Windows 10 21h2, published on 14 Jan 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Windows Kernel Memory Information Disclosure Vulnerability
Weakness: CWE-532
Which versions are affected by CVE-2025-21317?
It affects 8 products.
Products include Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 22h2, Microsoft Windows 11 23h2, Microsoft Windows 11 24h2, Microsoft Windows Server 2022 and 2 more.
How do I fix CVE-2025-21317?
No fix has been published for CVE-2025-21317 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-21317 being exploited?
There is no known exploitation of CVE-2025-21317 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 10 21h2
- CVE-2025-21333 Microsoft Windows Hyper-V NT Kernel Integration VSP Heap-based Buffer Overflow
- CVE-2025-21334 Microsoft Windows Hyper-V NT Kernel Integration VSP Use-After-Free
- CVE-2025-21335 Microsoft Windows Hyper-V NT Kernel Integration VSP Use-After-Free
- CVE-2026-42904 Windows TCP/IP Elevation of Privilege Vulnerability
- CVE-2026-105733 Windows Hyper-V Remote Code Execution Vulnerability
Sources
Also known as GHSA-mfpq-3jm4-gh33.