What’s Vulnerable › Vulnerabilities

CVE-2025-2176: libzvbi io-sim.c vbi_capture_sim_load_caption integer overflow

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-03-11 · updated 2026-06-17
• Weakness: CWE-189

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.

Affected products

• libzvbi: before 0.2.44 — fixed in 0.2.44

How to fix

Upgrade to a fixed version: libzvbi 0.2.44. Check the vendor advisory for mitigations.

References

• https://github.com/zapping-vbi/zvbi/commit/ca1672134b3e2962cd392212c73f44f8f4cb489f
• https://github.com/zapping-vbi/zvbi/releases/tag/v0.2.44
• https://github.com/zapping-vbi/zvbi/security/advisories/GHSA-g7cg-7gw9-v8cf
• https://vuldb.com/?ctiid.299205
• https://vuldb.com/?id.299205
• https://vuldb.com/?submit.512802

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