Summary
Impact: Remote Code Execution. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
According to the CVSS metric, the attack vector is network (AV:N) and user interaction is required (UI:R). What is the target context of the remote code execution?
This attack requires a user to open a specially crafted file from the attacker to initiate remote code execution.
Vulnerabilities 1
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High 8.8
HEVC Video Extensions Remote Code Execution Vulnerability
Integer underflow (wrap or wraparound) in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code over a network.
Revision history
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#1
Information published.
References
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CVE-2026-114164 HEVC Video Extensions Remote Code Execution Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-114164
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss