CVE-2025-27091 | OpenH264 - Codec Library Operational Intel

Executive Risk Summary

"A vulnerability in the OpenH264 codec library could allow a remote, unauthenticated attacker to trigger a heap overflow, potentially causing an unexpected crash and arbitrary code execution. This vulnerability affects OpenH264 2.5.0 and earlier releases, and users are advised to upgrade to version 2.6.0 or later."

Operational Audit Arsenal

Target Type Library

Target Asset libopenh264.so

Standard Path /usr/lib/

Manual Verification Required

This is a non-Windows asset (Cisco). Use the target asset details and official path provided above to verify your current version against the official vendor advisories listed below.

Patch Impact Forecast

Reboot Required Unlikely

Low

Internal Work Notes

Upgrade OpenH264 to version 2.6.0 or later to mitigate CVE-2025-27091, a heap overflow vulnerability in the codec library.

Technical Intelligence & Operational Utilities • Delivered Weekly

Intelligence Sources

Official Advisoryhttps://github.com/cisco/openh264/releases/tag/v2.6.0

Official Advisoryhttps://github.com/cisco/openh264/security/advisories/GHSA-m99q-5j7x-7m9x

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Data compiled from NVD, MSRC, and CISA KEV Catalog. Intelligence synthesized via AI. Scripts provided for diagnostic purposes under MIT License.