SB2025040895 - Multiple vulnerabilities in Microsoft Windows Kernel

Description

This security bulletin contains information about 2 vulnerabilities.

1) Untrusted Pointer Dereference (CVE-ID: CVE-2025-27739)

CWE-ID: CWE-822 - Untrusted Pointer Dereference

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

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to untrusted pointer dereference in Windows Kernel. A local user can run a specially crafted application and gain elevated privileges on the target system.

2) Sensitive Data Storage in Improperly Locked Memory (CVE-ID: CVE-2025-26648)

CWE-ID: CWE-591 - Sensitive Data Storage in Improperly Locked Memory

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

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to sensitive data storage in improperly locked memory in Windows Kernel. A local user can gain elevated privileges on the target system.

Remediation

Install update from vendor's website.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-27739
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26648