SB2025070998 - Multiple vulnerabilities in Microsoft Windows Kernel

Description

This security bulletin contains information about 2 vulnerabilities.

1) Processor optimization removal or modification of security-critical code (CVE-ID: CVE-2025-26636)

CWE-ID: CWE-1037 - Processor optimization removal or modification of security-critical code

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to processor optimization removal or modification of security-critical code in Windows Kernel. A local user can gain access to sensitive information.

2) Information disclosure (CVE-ID: CVE-2025-48808)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in Windows Kernel. A local user can gain unauthorized access to sensitive information on the system.

Remediation

Install update from vendor's website.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26636
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-48808