CVE-2026-14605 RT-Thread ls1c CAN ls1c_can.h recvmsg stack-based overflow
A local attacker can exploit a stack-based buffer overflow in the RT-Thread ls1c CAN handler to execute arbitrary code or escalate privileges.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-14605?
CVE-2026-14605 is a high-severity memory corruption vulnerability in RT-Thread, published on 3 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability was identified in RT-Thread up to 5.0.2. Affected by this vulnerability is the function recvmsg in the library bsp/loongson/ls1cdev/libraries/ls1c_can.h of the component ls1c CAN Handler. Such manipulation leads to stack-based buffer overflow. Local access is required to approach this attack. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-14605?
How do I fix CVE-2026-14605?
No fix has been published for CVE-2026-14605 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-2026-14605 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-14605 exists.
Sources
Also known as GHSA-whcm-77gq-7fj3.