CVE-2026-10065 Shibby Tomato tomatodata.cgi get_ups_field stack-based overflow

High 8.7 Published Updated

Remote attackers can trigger a stack-based buffer overflow in Shibby Tomato firmware via the get_ups_field function, leading to potential code execution or denial of service.

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-2026-10065?

CVE-2026-10065 is a high-severity memory corruption vulnerability in Shibby Tomato, published on 29 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A weakness has been identified in Shibby Tomato 1.28. This vulnerability affects the function get_ups_field of the file tomatodata.cgi. Executing a manipulation of the argument Date can lead to stack-based buffer overflow. It is possible to launch the attack remotely. This project is superseded by FreshTomato. This vulnerability only affects products that are no longer supported by the maintainer.

Weakness: CWE-121, CWE-119

Which versions are affected by CVE-2026-10065?

How do I fix CVE-2026-10065?

No fix has been published for CVE-2026-10065 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-2026-10065 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-10065 exists.

Sources

Also known as GHSA-j6r3-mvc3-qhh4.

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