CVE-2025-27091 · cross-distro fix matrix

CVE-2025-27091: OpenH264 is a free license codec library which supports H.264 encoding and decoding. A vulnerability in the decoding functions of OpenH264 codec library could allow a remote, unauthenticated attacker to trigger a heap overflow. This vulnerability is due to a race condition between a Sequence Paramet

Affects 4 Linux releases across 4 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2025-27091 has a known fix. Run the listed command on that distro to remediate.

Debian bookworm

Source: Debian Security Tracker

openh264→ fixed in2.3.1+dfsg-3+deb12u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y openh264
```

Debian trixie

Source: Debian Security Tracker

openh264→ fixed in2.5.0+dfsg-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y openh264
```

Alpine v3.21

Source: Alpine secdb

openh264→ fixed in2.6.0-r0

apk update && apk add --upgrade openh264

Alpine edge

Source: Alpine secdb

openh264→ fixed in2.6.0-r0

apk update && apk add --upgrade openh264

Are YOU affected by CVE-2025-27091?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

curl https://mindsparkstack.com/scan.sh | bash

Form-based quickscan View on NVD

Continuous monitoring beats manual checking

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