CVE-2025-54895 SPNEGO Extended Negotiation (NEGOEX) Security Mechanism Elevation of Privilege Vulnerability
An integer overflow in Windows SPNEGO allows a local attacker to elevate privileges, requiring a security patch.
- 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-2025-54895?
CVE-2025-54895 is a high-severity vulnerability in Microsoft Windows 10 1507, published on 9 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Integer overflow or wraparound in Windows SPNEGO Extended Negotiation allows an authorized attacker to elevate privileges locally.
Which versions are affected by CVE-2025-54895?
It affects 15 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 9 more.
How do I fix CVE-2025-54895?
No fix has been published for CVE-2025-54895 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-54895 being exploited?
There is no known exploitation of CVE-2025-54895 in the wild and no public exploit code.
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-rv4p-rhhc-pxcx.