Vulnerability · Published Oct 13, 2026 · Assigned by microsoft
CVE-2026-108400HEVC Video Extensions Remote Code Execution Vulnerability
High 8.8
In plain English
A high-severity integer overflow in HEVC Video 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 0.9% (higher than 60% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.9%top 40.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Integer overflow or wraparound in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | HEVC Video Extensions | 1.0.0 – before 2.4.87.0 |
| Microsoft | HEVC Video Extensions for Licensed Applications | 2.0.0.0 – before 2.4.85.0 |
| Microsoft | HEVC Video Extensions from Device Manufacturer | 2.0.0.0 – before 2.5.25.0 |
Weakness: CWE-190 · 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
- HEVC Video Extensions Remote Code Execution Vulnerability vendor-advisory, patch