Integer underflow in Microsoft products - CVE-2026-114164
Published: November 11, 2026
Vulnerability identifier: #VU165180
CSH Severity: High
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-114164
CWE-ID: CWE-191
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the affected system.
The vulnerability exists due to integer underflow in Microsoft Windows Codecs Library when processing a specially crafted file. A remote attacker can trick a user into opening the crafted file to execute arbitrary code on the affected system.
Affected software
HEVC Video Extensions from Device Manufacturer
HEVC Video Extensions for Licensed Applications
HEVC Video Extensions
HEVC Video Extensions for Licensed Applications
HEVC Video Extensions
How to mitigate CVE-2026-114164
Install security update from vendor's website.
HEVC Video Extensions from Device Manufacturer - addressed in versions 2.4.149.0, 2.5.48.0
HEVC Video Extensions for Licensed Applications - update to 2.4.150.0
HEVC Video Extensions - update to 2.4.151.0
HEVC Video Extensions for Licensed Applications - update to 2.4.150.0
HEVC Video Extensions - update to 2.4.151.0