CVE-2026-58600

HEVC Video Extensions Elevation of Privilege Vulnerability

State: Published
Severity: 7.8 High
Published: Sep 8, 2026
Updated: Oct 31, 2026
Reserved: Jul 1, 2026

Description

Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to elevate privileges locally.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-122 Heap-based Buffer Overflow

Affected Products

Product	Versions
HEVC Video ExtensionsMicrosoft	1.0.0 to before 2.4.87.0Affected
HEVC Video Extensions for Licensed ApplicationsMicrosoft	2.0.0.0 to before 2.4.85.0Affected
HEVC Video Extensions from Device ManufacturerMicrosoft	2.0.0.0 to before 2.4.86.0Affected

References

HEVC Video Extensions Elevation of Privilege Vulnerabilityvendor-advisorypatch

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