CVE-2025-21391 Microsoft Windows Storage Link Following
An attacker can exploit a Windows Storage vulnerability to escalate privileges on affected Windows operating systems.
- Exploited in the wild
- Since 11 Feb 2025
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-21391?
CVE-2025-21391 is a high-severity vulnerability in Microsoft Windows 10 1507, published on 11 Feb 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Windows Storage Elevation of Privilege Vulnerability
Weakness: CWE-59
Which versions are affected by CVE-2025-21391?
It affects 13 products.
Products include Microsoft Windows 10 1507, Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 22h2 and 7 more.
How do I fix CVE-2025-21391?
No fix has been published for CVE-2025-21391 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 4 Mar 2025.
Is CVE-2025-21391 being exploited?
Yes. Attackers have exploited CVE-2025-21391 in the wild since at least 11 Feb 2025.
Other vulnerabilities in Microsoft Windows 10 1507
- CVE-2017-8543 Microsoft Windows Search Remote Code Execution
- CVE-2025-33053 Microsoft Windows External Control of File Name or Path
- CVE-2025-33073 Microsoft Windows SMB Client Improper Access Control
- CVE-2024-49039 Microsoft Windows Task Scheduler Privilege Escalation
- CVE-2024-43461 Microsoft Windows MSHTML Platform Spoofing
Sources
Also known as GHSA-hq9p-wcjc-wqxg.