CVE-2026-109828 libsndfile WAV Parsing wavlike.c wavlike_subchunk_parse uninitialized variable
Remote attackers can exploit an uninitialized variable in libsndfile's WAV parser to potentially execute code or cause denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-109828?
CVE-2026-109828 is a medium-severity memory corruption vulnerability in libsndfile, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A vulnerability was found in libsndfile up to 1.2.2. This issue affects the function wavlike_subchunk_parse of the file src/wavlike.c of the component WAV Parsing. Performing a manipulation results in use of uninitialized variable. Remote exploitation of the attack is possible. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.
Which versions are affected by CVE-2026-109828?
How do I fix CVE-2026-109828?
No fix published yet.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-109828 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-109828 exists.
Sources
Also known as AZL-108036, BELL-CVE-2026-109828, DEBIAN-CVE-2026-109828, ECHO-db1c-5134-4939, GHSA-f48f-2357-x2fh, UBUNTU-CVE-2026-109828.