CVE-2025-2176 libzvbi io-sim.c vbi_capture_sim_load_caption integer overflow
A remote attacker can trigger an integer overflow in libzvbi's caption loading function, potentially causing denial of service or code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-2176?
CVE-2025-2176 is a medium-severity vulnerability in libzvbi, published on 11 Mar 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability classified as critical has been found in libzvbi up to 0.2.43. This affects the function vbi_capture_sim_load_caption of the file src/io-sim.c. The manipulation leads to integer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 0.2.44 is able to address this issue. The identifier of the patch is ca1672134b3e2962cd392212c73f44f8f4cb489f. It is recommended to upgrade the affected component. The code maintainer was informed beforehand about the issues. She reacted very fast and highly professional.
Which versions are affected by CVE-2025-2176?
It affects 1 product.
Products include Zapping-Vbi Zvbi.
How do I fix CVE-2025-2176?
Upgrade to a fixed version.
Is CVE-2025-2176 being exploited?
There is no known exploitation of CVE-2025-2176 in the wild and no public exploit code.
Other vulnerabilities in libzvbi
Sources
Also known as DEBIAN-CVE-2025-2176, GHSA-mg5m-vc6f-4mvq, UBUNTU-CVE-2025-2176.