Heap-based buffer overflow in Windows Media Video Decoder allows an unauthorized attacker to execute code over a network.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Oct 13, 2026 · NIST NVD

   Detected

   Heap-based buffer overflow in Windows Media Video Decoder allows an unauthorized attacker to execute code over a network.

2. Oct 14, 2026 · NIST NVD

   Updated

   Heap-based buffer overflow in Windows Media Video Decoder allows an unauthorized attacker to execute code over a network.

Sources

• CVE.orgVulnerability recordCVE-2026-100220

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2026-100220

  30-day exploitation probability 0.8%

  first.org
• NIST NVDVulnerability recordCVE-2026-100220

  Heap-based buffer overflow in Windows Media Video Decoder allows an unauthorized attacker to execute code over a network.

  nvd.nist.gov

References

• Reference · msrc.microsoft.com