#VU126061 Out-of-bounds read in Windows and Windows Server - CVE-2026-26155
Published: April 14, 2026
Vulnerability identifier: #VU126061
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-26155
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Windows
Windows Server
Windows
Windows Server
Software vendor:
Microsoft
Microsoft
Description
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in Microsoft Local Security Authority Subsystem Service. A remote user can trigger an out-of-bounds read error and read contents of memory on the system.
Remediation
Install updates from vendor's website.