Vulnerability · Published Sep 8, 2026 · Assigned by microsoft
CVE-2026-81352Web Media Extensions Remote Code Execution Vulnerability
High 8.8
In plain English
A high-severity heap buffer overflow in Web Media Extensions from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.6%top 52.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Web Media Extensions | 1.0.0.0 – before 1.2.42.0 |
Weakness: CWE-122 · Vector: 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
References
- Web Media Extensions Remote Code Execution Vulnerability vendor-advisory, patch