CVE-2026-14629: RT-Thread Parameter lwp_syscall.c sys_ioctl divide by zero

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-04 · updated 2026-07-06
Weakness: CWE-369

Description

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.

Affected products

RT-Thread: 5.2.0, 5.2.1, 5.2.2

References

https://github.com/RT-Thread/rt-thread/
https://github.com/RT-Thread/rt-thread/issues/11429
https://github.com/RT-Thread/rt-thread/pull/11453
https://vuldb.com/cve/CVE-2026-14629
https://vuldb.com/submit/845610
https://vuldb.com/vuln/376145
https://vuldb.com/vuln/376145/cti

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