CVE-2026-16095 Shibby Tomato rc setup_conntrack out-of-bounds write
Remote attackers can trigger an out-of-bounds write in Shibby Tomato firmware, potentially leading to code execution on affected routers.
- 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-2026-16095?
CVE-2026-16095 is a high-severity memory corruption vulnerability in Shibby Tomato, published on 18 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A flaw has been found in Shibby Tomato 1.28 RT-N5x MIPSR2 Build 124. Affected by this issue is the function setup_conntrack of the file /sbin/rc. Executing a manipulation of the argument ct_tcp_timeout can lead to out-of-bounds write. The attack may be performed from remote. This project is superseded by FreshTomato.
Which versions are affected by CVE-2026-16095?
How do I fix CVE-2026-16095?
No fix has been published for CVE-2026-16095 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-2026-16095 being exploited?
There is no known exploitation of CVE-2026-16095 in the wild and no public exploit code.
Sources
Also known as GHSA-6jfj-qh5w-m9vr.