Out-of-bounds read in Windows and Windows Server - CVE-2026-42914
Published: June 11, 2026
Vulnerability identifier: #VU134318
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-42914
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Microsoft
Affected software:
Windows
Windows Server
Windows
Windows Server
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition in Windows Kerberos. A remote user can trigger an out-of-bounds read error and cause a denial of service condition on the target system.
How to mitigate CVE-2026-42914
Install updates from vendor's website.