CVE-2026-19034 Shibby Tomato qoslimittc_stop.sh new_qoslimit_stop os command injection
Remote attackers can execute arbitrary OS commands via the wan_iface argument in Shibby Tomato firmware, which is now end-of-life.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-19034?
CVE-2026-19034 is a high-severity command injection vulnerability in Shibby Tomato, published on 6 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A vulnerability was determined in Shibby Tomato 1.28.0000. Affected by this vulnerability is the function new_qoslimit_stop of the file /tmp/qoslimittc_stop.sh. Executing a manipulation of the argument wan_iface can lead to os command injection. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized. This project is superseded by FreshTomato.
Which versions are affected by CVE-2026-19034?
How do I fix CVE-2026-19034?
No fix has been published for CVE-2026-19034 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-19034 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19034 exists.
Sources
Also known as GHSA-p42c-v74f-mh4c.