CVE-2026-112007 Schism Tracker through 20260524 Heap Out-of-Bounds Write via ULT Loader
Attackers can execute arbitrary code or crash Schism Tracker by providing a crafted .ult module that triggers a heap out-of-bounds write.
- 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-2026-112007?
CVE-2026-112007 is a medium-severity memory corruption vulnerability in schismtracker Schism Tracker, published on 18 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
Schism Tracker through 20260524 contains a heap out-of-bounds write vulnerability in fmt_ult_load_song() in fmt/ult.c that fails to clamp the one-byte sample count to MAX_SAMPLES. Attackers can supply a crafted .ult module that overwrites the instruments pointer array, causing csf_destroy() to free attacker-chosen pointers and crash the application.
Weakness: CWE-787
Which versions are affected by CVE-2026-112007?
How do I fix CVE-2026-112007?
No fix has been published for CVE-2026-112007 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-2026-112007 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-112007 exists.
Sources
Also known as DEBIAN-CVE-2026-112007, GHSA-qfh4-g83h-4vcx, UBUNTU-CVE-2026-112007.