CVE-2026-107125 XnView Classic FLI File heap-based overflow
A heap-based buffer overflow in XnView Classic's FLI file parser allows remote attackers to execute arbitrary code via a malicious file.
- 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-2026-107125?
CVE-2026-107125 is a medium-severity memory corruption vulnerability in XnView Classic, published on 7 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 flaw has been found in XnView Classic 2.52.5. Impacted is an unknown function of the component FLI File Parser. This manipulation of the argument starting_line causes heap-based buffer overflow. Remote exploitation of the attack is possible. Upgrading to version 2.52.6 is recommended to address this issue. Upgrading the affected component is advised.
Which versions are affected by CVE-2026-107125?
How do I fix CVE-2026-107125?
No fix has been published for CVE-2026-107125 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-2026-107125 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-107125 exists.
Sources
Also known as GHSA-6qwg-pvpq-p453.