CVE-2026-58599

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

CVSS 3.1

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

EPSS

0.5% chance of exploitation in the next 30 days; higher than 40% of CVEs (scores of 2026-10-25)

CWE

CWE-122

Published

2026-09-08

Modified

2026-10-01

Record from

the NVD, synced 2026-10-19

Affected

• microsoft:hevc_video_extensions
• microsoft:hevc_video_extensions_for_licensed_applications
• microsoft:hevc_video_extensions_from_device_manufacturer

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58599

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