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Recorded 10 Nov 2026 at 18:32 UTC. This is what ChangeIntel recorded, including the title, summary, facts and links. It is not a statement of the source's current position. See the latest record.

CVEMicrosoft Security Response Center

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.

What it said

CVE
CVE-2026-114164
Severity
Important
CVSS base score
8.8
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Impact
Remote Code Execution
Exploitation detected
No known exploitation (MSRC assessment)
Publicly disclosed
No (MSRC assessment)
Exploitability
Exploitation Less Likely
Component
Microsoft Windows Codecs Library
Weakness
CWE-191: Integer Underflow (Wrap or Wraparound)
Issued by
Microsoft
Customer action
Required: follow the MSRC remediation guidance
Affected products
HEVC Video Extensions for Licensed Applications on Windows 10 version 1809, HEVC Video Extensions for Licensed Applications on Windows 10 version 21H2, HEVC Video Extensions for Licensed Applications on Windows 10 version 22H2, HEVC Video Extensions for Licensed Applications on Windows 11 version 23H2, HEVC Video Extensions for Licensed Applications on Windows 11 version 24H2, HEVC Video Extensions for Licensed Applications on Windows 11 version 25H2, HEVC Video Extensions for Licensed Applications on Windows 11 version 26H1, HEVC Video Extensions for Licensed Applications on Windows 11 version 26H2, HEVC Video Extensions from Device Manufacturer on Windows 10 version 1809, HEVC Video Extensions from Device Manufacturer on Windows 10 version 21H2, HEVC Video Extensions from Device Manufacturer on Windows 10 version 22H2, HEVC Video Extensions from Device Manufacturer on Windows 11 version 23H2, HEVC Video Extensions from Device Manufacturer on Windows 11 version 24H2, HEVC Video Extensions from Device Manufacturer on Windows 11 version 25H2, HEVC Video Extensions from Device Manufacturer on Windows 11 version 26H1, HEVC Video Extensions from Device Manufacturer on Windows 11 version 26H2, HEVC Video Extensions on Windows 10 version 1809, HEVC Video Extensions on Windows 10 version 21H2, HEVC Video Extensions on Windows 10 version 22H2, HEVC Video Extensions on Windows 11 version 23H2, HEVC Video Extensions on Windows 11 version 24H2, HEVC Video Extensions on Windows 11 version 25H2, HEVC Video Extensions on Windows 11 version 26H1, HEVC Video Extensions on Windows 11 version 26H2
Updates that fix it
No KB listed
CISA KEV
Not listed in the collected catalog
EPSS
No EPSS score collected
Public detection template
No Nuclei template listed
Published
10 Nov 2026 08:00 UTC
Last revised
10 Nov 2026 08:00 UTC
Revision note
Information published.

Source evidence when recorded

Microsoft security releases
Complete at observationRead 10 Nov 2026 at 18:30 UTC
CISA KEV
Complete at observationRead 10 Nov 2026 at 18:30 UTC
FIRST EPSS
Complete at observationRead 10 Nov 2026 at 18:30 UTC
Public detection templates (Nuclei)
Complete at observationRead 10 Nov 2026 at 18:30 UTC

Coverage describes the sources at this observation. A complete read then does not establish their current position.

Page history

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Sources read 10 Nov 23:48 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current

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