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GHSA-5pmw-9j92-3c4c

HighCVSS 8.6 / 10
Published Feb 24, 2025·Last modified Oct 28, 2025
Affected Components(0)

No affected components available

Description

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.

Risk Scores
Base Score
8.6

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights.

Threat Intelligence
6.1

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
N/A

Probability that this vulnerability will be exploited in the wild within the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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High severity
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