# CVE-2026-102199: Microsoft Windows Codecs Library stack-based buffer overflow

Source: https://junglewise.ai/threats/cve-2026-102199-stack-based-buffer-overflow-in-microsoft-windows-codecs-library  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-102199 · Severity: medium · CVSS 6.5 · Published 2026-10-13

Microsoft Windows Codecs Library, a system component for handling image and video formats, contains a stack-based buffer overflow vulnerability. An attacker on the network can trigger this flaw to crash the system or cause denial of service, disrupting business operations.

Technologies: [Microsoft Windows Codecs Library](https://junglewise.ai/threats/technologies/windows-codecs-library). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-102199 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-102199 being exploited in the wild.

**How severe is CVE-2026-102199?** Medium severity, with a CVSS score of 6.5, published 13 October 2026.

**Which products and versions are affected?** Microsoft Windows Codecs Library.

**Is there a fix for CVE-2026-102199?** 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-2026-102199 attacked?** It is attacked over the network, in an operating system.

**Am I affected by CVE-2026-102199?** 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

A stack-based buffer overflow exists in Microsoft Windows Codecs Library that can be triggered remotely without authentication. The vulnerability allows an attacker to deny service by sending a malformed codec input over the network, causing a crash or resource exhaustion condition.

## Affected products

- Microsoft Windows Codecs Library

## Timeline

- 2026-10-13: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-102199](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-102199)

## Related threats

- [Microsoft Windows Codecs Library information disclosure via uninitialized resource](https://junglewise.ai/threats/cve-2026-96150-use-of-uninitialized-resource-in-microsoft-windows-codecs-library)
- [Microsoft Windows Codecs Library heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-114167-heap-based-buffer-overflow-in-microsoft-windows-codecs-library)
- [Microsoft Windows Codecs Library heap buffer overflow](https://junglewise.ai/threats/cve-2026-114165-heap-based-buffer-overflow-in-microsoft-windows-codecs-library)
- [Microsoft Windows Codecs Library integer underflow](https://junglewise.ai/threats/cve-2026-114164-integer-underflow-wrap-or-wraparound-in-microsoft-windows-codecs)
- [Microsoft Windows Codecs Library integer overflow](https://junglewise.ai/threats/cve-2026-108400-integer-overflow-or-wraparound-in-microsoft-windows-codecs)