CVE-2026-15545 Shibby Tomato apcupsd tomatodata.cgi main out-of-bounds write
Remote attackers can trigger an out-of-bounds write in the apcupsd component of Shibby Tomato, potentially leading to code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15545?
CVE-2026-15545 is a high-severity memory corruption vulnerability in Shibby Tomato, published on 13 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was identified in Shibby Tomato up to 1.28.0000. Affected by this vulnerability is the function main of the file www/apcupsd/tomatodata.cgi of the component apcupsd. Such manipulation leads to out-of-bounds write. The attack may be launched remotely. The exploit is publicly available and might be used. This project is superseded by FreshTomato.
Which versions are affected by CVE-2026-15545?
How do I fix CVE-2026-15545?
No fix has been published for CVE-2026-15545 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-2026-15545 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15545 exists.
Sources
Also known as GHSA-x2mq-9fxf-86m4.