Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-81352
Microsoft Web Media Extensions — Web Media Extensions Remote Code Execution Vulnerability
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L N R U H H H 8.8 .0048 39.2 —
AFFECTED
Product Versions Fixed
Web Media Extensions 1.0.0.0 – —
TIMELINE
Aug 26 Reserved by microsoft
Sep 8 Published (CNA: microsoft)
Sep 23 RESCORED — CVE-2026-81352 (Microsoft Web Media Extensions). CVSS 8.8 → 9.8 (NVD).
Sep 30 RESCORED — CVE-2026-81352 (Microsoft Web Media Extensions). CVSS 9.8 → 8.8 (NVD).
Description
Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code over a network.
Lifecycle
Complete event history — 4 events, chronological
| Date | Event | Detail |
|---|
| August 26, 2026 | Reserved | Reserved by microsoft |
| September 8, 2026 | Published | Published (CNA: microsoft) |
| September 23, 2026 | RESCORED | RESCORED — CVE-2026-81352 (Microsoft Web Media Extensions). CVSS 8.8 → 9.8 (NVD). |
| September 30, 2026 | RESCORED | RESCORED — CVE-2026-81352 (Microsoft Web Media Extensions). CVSS 9.8 → 8.8 (NVD). |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Microsoft | Web Media Extensions | — | 1.0.0.0 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-81352 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
