CVE-2026-112281 libaribb24 through 1.0.3 Stack Buffer Overflow via decoder_handle_csi
Attackers can trigger a stack buffer overflow in libaribb24 via malicious media files, potentially causing crashes or arbitrary code execution in applications like FFmpeg.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-112281?
CVE-2026-112281 is a medium-severity memory corruption vulnerability in nkoriyama aribb24, published on 19 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
libaribb24 (aribb24) through 1.0.3 contains a stack-based buffer overflow vulnerability in decoder_handle_csi() in src/decoder.c that allows attackers to write past a fixed 256-entry array by supplying unbounded CSI parameter bytes. Attackers can embed a caption statement with a CSI introducer and over 256 parameter bytes in media files or broadcast streams to crash FFmpeg or VLC or corrupt the return address.
Weakness: CWE-121
Which versions are affected by CVE-2026-112281?
How do I fix CVE-2026-112281?
No fix has been published for CVE-2026-112281 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-112281 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-112281 exists.
Sources
Also known as GHSA-6rxg-9w2c-f7x4.