CVE-2026-108400 json
HEVC Video Extensions Remote Code Execution Vulnerability
published 27d ago modified 9d ago also EUVD-2026-99031
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 60%
- public exploits
- 0
- none known
Summary
Integer overflow or wraparound in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code over a network.
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 2.5.25.0
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 27d ago
Exploit prediction
0.91% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/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-190 Integer Overflow or Wraparound
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2026-108400
vendor-advisory, patch
Sources
- CVE List CVE-2026-108400
- NVD CVE-2026-108400
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