CVE-2026-86514 vgmstream txth-txtp txth.c sscanf stack-based overflow
A stack-based buffer overflow in vgmstream allows remote attackers to execute arbitrary code or cause denial of service via crafted files.
- 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
- None listed
What is CVE-2026-86514?
CVE-2026-86514 is a medium-severity memory corruption vulnerability in vgmstream, published on 8 Sep 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 weakness has been identified in vgmstream up to r2117. This issue affects the function sscanf of the file src/meta/txth.c of the component txth-txtp. This manipulation causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. Patch name: 4669d37a6af94866f6f0628678f9f90d46954e8b. To fix this issue, it is recommended to deploy a patch.
Which versions are affected by CVE-2026-86514?
How do I fix CVE-2026-86514?
No fix has been published for CVE-2026-86514 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-2026-86514 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-86514 exists.
Sources
Also known as GHSA-4679-29mh-67pg.