CVE-2026-58599

HighCVSS 7.8/10Last modified Oct 1, 2026

Description

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

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-122

Affected software

Vendor	Product	Versions
Microsoft	HEVC Video Extensions	>= 1.0.0, < 2.4.87.0
Microsoft	HEVC Video Extensions for Licensed Applications	>= 2.0.0.0, < 2.4.85.0
Microsoft	HEVC Video Extensions from Device Manufacturer	>= 2.0.0.0, < 2.4.86.0

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58599Patch, Vendor Advisory

Timeline

Published: Sep 8, 2026
Last modified: Oct 1, 2026
NVD status: Analyzed

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