CVE-2025-48809

Windows Secure Kernel Mode Information Disclosure Vulnerability

Description

Processor optimization removal or modification of security-critical code in Windows Kernel allows an authorized attacker to disclose information locally.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.04%
Vendor Advisory microsoft.com
Affected: Microsoft Windows Server 2025 (Server Core installation)
Affected: Microsoft Windows 11 Version 24H2
Affected: Microsoft Windows Server 2025
Published at:
Updated at:

References

Link Tags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-48809 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2025-48809?
CVE-2025-48809 has been scored as a medium severity vulnerability.
How to fix CVE-2025-48809?
To fix CVE-2025-48809, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-48809 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-48809 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-48809?
CVE-2025-48809 affects Microsoft Windows Server 2025 (Server Core installation), Microsoft Windows 11 Version 24H2, Microsoft Windows Server 2025.
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