CVE-2025-48809 Windows Secure Kernel Mode Information Disclosure Vulnerability
An authorized local attacker can disclose sensitive information due to security-critical code removal in the Windows Kernel.
- 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-2025-48809?
CVE-2025-48809 is a medium-severity vulnerability in Microsoft Windows 11 24h2, published on 8 Jul 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Processor optimization removal or modification of security-critical code in Windows Kernel allows an authorized attacker to disclose information locally.
Weakness: CWE-1037
Which versions are affected by CVE-2025-48809?
It affects 2 products.
Products include Microsoft Windows 11 24h2, Microsoft Windows Server 2025.
How do I fix CVE-2025-48809?
No fix has been published for CVE-2025-48809 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-48809 being exploited?
There is no known exploitation of CVE-2025-48809 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 11 24h2
- CVE-2025-60710 Microsoft Windows Link Following
- CVE-2026-54990 Remote Desktop Client Remote Code Execution Vulnerability
- CVE-2025-50165 Windows Graphics Component Remote Code Execution Vulnerability
- CVE-2025-21311 Windows NTLM V1 Elevation of Privilege Vulnerability
- CVE-2026-108463 Windows SmartScreen Security Feature Bypass Vulnerability
Sources
Also known as GHSA-58c9-xg8g-x33q.