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TI-2026-56165 Aliases CVE-2026-81352GHSA-hjjj-2c64-x435

Web Media Extensions Remote Code Execution Vulnerability

Priority MEDIUM 41CWE-122Published · 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 Microsoft.

Summary

Heap-based buffer overflow 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 0.00571 47th percentileScored 2026-11-07
Fix Fixed Web Media Extensions (Microsoft): 1.2.42.0

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
MicrosoftWeb Media Extensions1.0.0.0 to before 1.2.42.01.2.42.0Patch availableCNA
  • Web Media Extensions VendorMicrosoft Affected 1.0.0.0 to before 1.2.42.0 Fixed in 1.2.42.0 Patch available CNA

CPE configurations NVD · 16

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:web_media_extensions:*:*:*:*:*:*:*:*before 1.2.42.0VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:*before 10.0.19044.7725Running onMicrosoft
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:*before 10.0.19044.7725Running onMicrosoft
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:*before 10.0.19044.7725Running onMicrosoft
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:*before 10.0.19045.7725Running onMicrosoft
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:*before 10.0.19045.7725Running onMicrosoft
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:*before 10.0.19045.7725Running onMicrosoft
cpe:2.3:a:microsoft:web_media_extensions:*:*:*:*:*:*:*:*before 2.1.51.0VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:*all versionsRunning onMicrosoft
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:*all versionsRunning onMicrosoft
  • cpe:2.3:a:microsoft:web_media_extensions:*:*:*:*:*:*:*:* Versions before 1.2.42.0 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:* Versions before 10.0.19044.7725 Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:* Versions before 10.0.19044.7725 Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:* Versions before 10.0.19044.7725 Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:* Versions before 10.0.19045.7725 Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:* Versions before 10.0.19045.7725 Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:* Versions before 10.0.19045.7725 Running on ·Microsoft
  • cpe:2.3:a:microsoft:web_media_extensions:*:*:*:*:*:*:*:* Versions before 2.1.51.0 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:* Versions all versions Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:* Versions all versions Running on ·Microsoft
Show 6 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:*all versionsRunning onMicrosoft
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:*all versionsRunning onMicrosoft
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:*all versionsRunning onMicrosoft
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:*all versionsRunning onMicrosoft
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*all versionsRunning onMicrosoft
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*all versionsRunning onMicrosoft
  • cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:* Versions all versions Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:* Versions all versions Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:* Versions all versions Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:* Versions all versions Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:* Versions all versions Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:* Versions all versions Running on ·Microsoft

Remediation

  • Fix · CNA Web Media Extensions (Microsoft) Fixed in 1.2.42.0

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Remote Code Execution
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Unlikely
ProductStatusPlan or fix
Web Media ExtensionsFixed 1.2.42.0 · Security Update
Web Media ExtensionsFixed 2.1.51.0 · Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-81352
  2. 2026-10-03 Alias added: GHSA-hjjj-2c64-x435

References

Patch 1

  • TI-2021-09578 Web Media Extensions Remote Code Execution Vulnerability CVSS 3.1HIGH 7.8

Sources

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