CVE-2026-14606: RT-Thread SWM341 CAN SWM341.h CAN_Receive stack-based overflow

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-03 · updated 2026-07-06
Weakness: CWE-119

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.

Affected products

RT-Thread: 5.0.0, 5.0.1, 5.0.2

References

https://github.com/RT-Thread/rt-thread/
https://github.com/RT-Thread/rt-thread/issues/11425
https://vuldb.com/cve/CVE-2026-14606
https://vuldb.com/submit/844591
https://vuldb.com/vuln/376114
https://vuldb.com/vuln/376114/cti
https://vuldb.com/submit/844591

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