CVE-2026-58599

EUVD-2026-73642
Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code locally.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
microsoftCNA
7.8 HIGH
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
microsofthevc_video_extensions
1.0.0 ≤
𝑥
< 2.4.87.0
CNA
microsofthevc_video_extensions
2.0.0.0 ≤
𝑥
< 2.4.85.0
CNA
microsofthevc_video_extensions
2.0.0.0 ≤
𝑥
< 2.4.86.0
CNA
Common Weakness Enumeration
Vulnerability Media Exposure
References
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58599