CVE-2026-14629
MediumCVSS 4.3Exploitation Probability (EPSS)
Low risk23th percentile - higher than 23% of all known CVEs
Summary
A flaw in RT-Thread up to version 5.2.2 affects the read/write/sys_ioctl functions in components/lwp/lwp_syscall.c. Parameter manipulation can cause a divide-by-zero error, allowing remote attacks. The exploit is published and may be used.
Risk Assessment
An attacker can remotely trigger a divide-by-zero error, causing system crashes and denial of service (DoS), potentially compromising system stability.
Recommendation
Apply the pending fix from the pull request immediately or upgrade RT-Thread to a version above 5.2.2 once released. Restrict access to vulnerable functions until patched.
Other vulnerabilities in RT-Thread
See all- CVE-2026-14607Medium
A weakness has been identified in RT-Thread up to version 5.0.2 in the function sys_getaddrinfo in file components/lwp/lwp_syscall.c. Manipulation of the ai_addr argument can lead to memory corruption. The attack requires local access and the exploit is publicly available.
- CVE-2026-14606High
A security flaw in RT-Thread up to version 5.0.2 affects the CAN_Receive function in the SWM341.h file of the SWM341 CAN Handler component. A local attacker can trigger a stack-based buffer overflow through data manipulation. A public exploit is available for attacks.
- CVE-2026-14605High
A stack-based buffer overflow vulnerability was found in RT-Thread up to version 5.0.2 in the ls1c CAN Handler component's recvmsg function. The attack requires local access and the exploit is publicly available.
Original NVD description (English source)
A flaw has been found in RT-Thread up to 5.2.2. Affected is the function read/write/sys_ioctl of the file components/lwp/lwp_syscall.c of the component Parameter Handler. Executing a manipulation can lead to divide by zero. The attack may be launched remotely. The exploit has been published and may be used. The pull request to fix this issue awaits acceptance.