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TI-2026-73401 Aliases CVE-2026-108400GHSA-5m3f-9xq8-mc4f

HEVC Video Extensions integer overflow allows remote code execution

Priority MEDIUM 42CWE-190Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-190 and the CVSS impact.

Summary

Microsoft HEVC Video Extensions, HEVC Video Extensions for Licensed Applications and HEVC Video Extensions from Device Manufacturer are affected in the ranges from 1.0.0 before 2.4.87.0, from 2.0.0.0 before 2.4.85.0 and from 2.0.0.0 before 2.5.25.0. An integer overflow or wraparound in the Microsoft Windows Codecs Library (CWE-190) lets an unauthorized attacker execute code over a network. The vector requires user interaction.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Integer overflow or wraparound in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code over a network.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00905 60th percentileScored 2026-11-07
Fix Fixed HEVC Video Extensions (Microsoft): 2.4.87.0HEVC Video Extensions for Licensed Applications (Microsoft): 2.4.85.0+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftHEVC Video Extensions1.0.0 to before 2.4.87.02.4.87.0Patch availableCNA
MicrosoftHEVC Video Extensions for Licensed Applications2.0.0.0 to before 2.4.85.02.4.85.0Patch availableCNA
MicrosoftHEVC Video Extensions from Device Manufacturer2.0.0.0 to before 2.5.25.02.5.25.0Patch availableCNA
  • HEVC Video Extensions VendorMicrosoft Affected 1.0.0 to before 2.4.87.0 Fixed in 2.4.87.0 Patch available CNA
  • HEVC Video Extensions for Licensed Applications VendorMicrosoft Affected 2.0.0.0 to before 2.4.85.0 Fixed in 2.4.85.0 Patch available CNA
  • HEVC Video Extensions from Device Manufacturer VendorMicrosoft Affected 2.0.0.0 to before 2.5.25.0 Fixed in 2.5.25.0 Patch available CNA

Remediation

Update HEVC Video Extensions to 2.4.87.0, HEVC Video Extensions for Licensed Applications to 2.4.85.0 and HEVC Video Extensions from Device Manufacturer to 2.5.25.0.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA HEVC Video Extensions (Microsoft) Fixed in 2.4.87.0
  • Fix · CNA HEVC Video Extensions for Licensed Applications (Microsoft) Fixed in 2.4.85.0
  • Fix · CNA HEVC Video Extensions from Device Manufacturer (Microsoft) Fixed in 2.5.25.0

Timeline

  1. 2026-10-13 Threatist record created from CVE-2026-108400
  2. 2026-10-13 CISA SSVC decision points changed
  3. 2026-10-13 Priority changed: MEDIUM → LOW
  4. 2026-10-13 Alias added: GHSA-5m3f-9xq8-mc4f
  5. 2026-10-14 Priority changed: LOW → MEDIUM

References

Patch 1

  • TI-2026-42212 Microsoft SharePoint Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-37256 Microsoft SharePoint Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-26194 Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-16982 Microsoft SharePoint Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-36863 Windows Server Update Service (WSUS) Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-33671 Microsoft SharePoint Server Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
See all 18045 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences