Use-after-free in Microsoft Windows and Windows Server - CVE-2026-61357

 

Use-after-free in Microsoft Windows and Windows Server - CVE-2026-61357

Published: August 12, 2026


Vulnerability identifier: #VU141887
CSH Severity: Low
CVSS v4: 8.5 [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]
CVE-ID: CVE-2026-61357
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to escalate privileges.

The vulnerability exists due to use-after-free in Application Information Services when handling local requests. A local user can trigger the flaw to escalate privileges.

Successful exploitation could result in SYSTEM privileges.


Affected software

Microsoft Windows
Windows Server

How to mitigate CVE-2026-61357

Install security update from vendor's website.

Microsoft Windows - addressed in versions 11 24H2 10.0.26100.9106, 11 24H2 10.0.26100.9168, 11 25H2 10.0.26200.9168, 11 26H1 10.0.28000.2704
Windows Server - addressed in versions 2025 10.0.26100.33222, 2025 10.0.26100.33296

External References

Related Security Bulletins