CVE-2026-110654 libzvbi through 0.2.45 Out-of-Bounds Write via Teletext DRCS convert_drcs
Attackers can cause memory corruption and application crashes by sending crafted Teletext streams to applications using libzvbi.
- 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
- Available
What is CVE-2026-110654?
CVE-2026-110654 is a medium-severity memory corruption vulnerability in zapping-vbi libzvbi, published on 14 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
libzvbi through 0.2.45 contains an out-of-bounds write vulnerability in the Teletext decoder that allows attackers to corrupt memory by supplying unvalidated DRCS pixel-mode values in X/28/3 packets. Attackers can send a crafted Teletext stream decoded via vbi_decode with every slot set to DRCS_MODE_6_5_4, causing convert_drcs to overflow chars[48][60] and crash the application.
Weakness: CWE-787
Which versions are affected by CVE-2026-110654?
How do I fix CVE-2026-110654?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-110654 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-110654 exists.
Sources
Also known as DEBIAN-CVE-2026-110654, ECHO-bc78-502d-b84d, GHSA-pw98-3fpx-6f7v, UBUNTU-CVE-2026-110654.