CVE-2026-58599CWE-122

CVE-2026-58599

High · published September 8, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
39.5
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00466 · 39.5th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-09-08T22:17Z
Affected products (4)
ProductVersionsFixed in
microsoft/hevc_video_extensions< 2.4.87.02.4.87.0
microsoft/hevc_video_extensions_for_licensed_applications< 2.4.85.02.4.85.0
microsoft/hevc_video_extensions_from_device_manufacturer< 2.4.86.02.4.86.0
microsoft/hevc_video_extensions_from_device_manufacturer< 2.5.25.02.5.25.0
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58599 · [email protected]
EPSS history
Timeline
  • 10 SEP 03:17Z
    EPSS moved — → 0%
    epss
  • 08 SEP 17:16Z
    HEVC Video Extensions Remote Code Execution Vulnerability
    cvelistv5