CVE-2026-14606
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk4th percentile — higher than 4% of all known CVEs
Summary
A stack-based buffer overflow vulnerability was discovered in RT-Thread up to version 5.0.2 in the CAN_Receive function within the SWM341.h file of the SWM341 CAN Handler component. A local attacker can trigger the overflow through manipulation. A public exploit is available.
Risk Assessment
The organization faces risk of local system compromise or denial of service due to stack buffer overflow in the CAN driver. Local access is required, but the public exploit increases the likelihood of attacks.
Recommendation
Immediately update RT-Thread to a version above 5.0.2 if available, or apply a vendor patch. If no update is available, restrict local system access and monitor for unusual activity.
Original NVD description (English source)
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.