Quick answers
- Is CVE-2026-108400 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-108400 being exploited in the wild.
- How severe is CVE-2026-108400?
- High severity, with a CVSS score of 8.8, published 13 October 2026.
- Which products and versions are affected?
- Microsoft Windows Codecs Library.
- Is there a fix for CVE-2026-108400?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-108400 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2026-108400?
- Check whether you run Microsoft Windows Codecs Library. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An integer overflow or wraparound vulnerability in the Windows Codecs Library allows remote code execution without authentication. The vulnerability is network-accessible and can be triggered through processing of malformed codec data. The flaw permits an attacker to execute code with the privileges of the application handling the codec.
Affected products
- Microsoft Windows Codecs Library
Timeline
- 2026-10-13: disclosed