Vulnerability · Published Oct 13, 2026 · Assigned by microsoft
CVE-2026-70343Microsoft MPEG-2 Video Extension Remote Code Execution Vulnerability
High 8.8
In plain English
A high-severity heap buffer overflow in MPEG-2 Video Extension from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 60% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.9%top 39.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Heap-based buffer overflow in Microsoft MPEG-2 Video Extension allows an unauthorized attacker to execute code over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | MPEG-2 Video Extension | 1.0.0.0 – before 1.2.32.0 |
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
- Microsoft MPEG-2 Video Extension Remote Code Execution Vulnerability vendor-advisory, patch