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  5. GHSA-5pmw-9j92-3c4c

GHSA-5pmw-9j92-3c4c: OpenH264 Rust API Openh264 Decoding Functions Heap Overflow Vulnerability

February 24, 2025 (updated October 31, 2025)

OpenH264 recently reported a heap overflow that was fixed in upstream 63db555 and integrated into our 0.6.6 release. For users relying on Cisco’s pre-compiled DLL, we also published 0.8.0, which is compatible with their latest fixed DLL version 2.6.0.

In other words:

  • if you rely on our source feature only, >=0.6.6 should be safe,
  • if you rely on libloading, you must upgrade to 0.8.0 and use their latest DLL >=2.6.0.

Users handling untrusted video files should update immediately.

References

  • github.com/advisories/GHSA-5pmw-9j92-3c4c
  • github.com/cisco/openh264/pull/3818
  • github.com/ralfbiedert/openh264-rs
  • github.com/ralfbiedert/openh264-rs/commit/3a822fff0b4c9a984622ca2b179fe8898ac54b14
  • nvd.nist.gov/vuln/detail/CVE-2025-27091
  • rustsec.org/advisories/RUSTSEC-2025-0008.html

Code Behaviors & Features

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Affected versions

All versions before 0.8.0

Fixed versions

  • 0.8.0

Solution

Upgrade to version 0.8.0 or above.

Impact 8.8 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Learn more about CVSS

Weakness

  • CWE-122: Heap-based Buffer Overflow
  • CWE-1395: Dependency on Vulnerable Third-Party Component

Source file

cargo/openh264-sys2/GHSA-5pmw-9j92-3c4c.yml

Spotted a mistake? Edit the file on GitLab.

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