CVE-2026-14606 RT-Thread SWM341 CAN SWM341.h CAN_Receive stack-based overflow
A local stack-based buffer overflow in the RT-Thread SWM341 CAN driver allows attackers 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-2026-14606?
CVE-2026-14606 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 security flaw has been discovered in RT-Thread up to 5.0.2. Affected by this issue is the function CAN_Receive in the library bsp/synwit/libraries/SWM341_CSL/CMSIS/DeviceSupport/SWM341.h of the component SWM341 CAN Handler. Performing a manipulation results in stack-based buffer overflow. The attack needs to be approached locally. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-14606?
How do I fix CVE-2026-14606?
No fix has been published for CVE-2026-14606 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-2026-14606 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-14606 exists.
Sources
Also known as GHSA-q2qc-v4ph-4mrq.