CVE-2026-14605: RT-Thread ls1c CAN ls1c_can.h recvmsg 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 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.

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/11424
https://vuldb.com/cve/CVE-2026-14605
https://vuldb.com/submit/844580
https://vuldb.com/vuln/376113
https://vuldb.com/vuln/376113/cti

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