CVE-2026-111154 libTiMidity through 0.2.8 Stack Out-of-Bounds Write via parse_gen in SoundFont Loader
Attackers can execute arbitrary code or cause denial of service by supplying a crafted SoundFont file to applications using libTiMidity.
- 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-2026-111154?
CVE-2026-111154 is a medium-severity memory corruption vulnerability in sezero libtimidity, published on 15 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
libTiMidity through 0.2.8 contains a stack out-of-bounds write vulnerability in the SoundFont loader that allows attackers to corrupt stack memory via unchecked generator operators in parse_gen. Attackers can supply a crafted .sf2 file with out-of-range pgen/igen operator values to write chosen 16-bit values near the stack Layer object, causing crashes and stack memory corruption.
Weakness: CWE-787
Which versions are affected by CVE-2026-111154?
How do I fix CVE-2026-111154?
No fix has been published for CVE-2026-111154 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-2026-111154 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-111154 exists.
Sources
Also known as DEBIAN-CVE-2026-111154, GHSA-qg69-jphp-p9g8, UBUNTU-CVE-2026-111154.