CVE-2026-58600 json
HEVC Video Extensions Elevation of Privilege Vulnerability
published 2026-09-08 2 mo ago modified 2026-10-31 8 d ago also EUVD-2026-73077
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 40%
- public exploits
- 0
- none known
Summary
Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to elevate privileges locally.
Patch / fix
- Microsoft HEVC Video Extensions 2.4.87.0
- Microsoft HEVC Video Extensions for Licensed Applications 2.4.85.0
- Microsoft HEVC Video Extensions from Device Manufacturer 2.4.86.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 1 mo ago
Exploit prediction
0.47% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.8 | 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 |
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected products
- Microsoft HEVC Video Extensions
- Microsoft HEVC Video Extensions for Licensed Applications
- Microsoft HEVC Video Extensions from Device Manufacturer
Classification
- Weakness
-
- CWE-122 Heap-based Buffer Overflow
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2026-58600
vendor-advisory, patch
Sources
- CVE List CVE-2026-58600
- NVD CVE-2026-58600
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