CVE-2026-14629

MEDIUM

RT-Thread Parameter lwp_syscall.c sys_ioctl divide by zero

Title source: cna
STIX 2.1

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.

References (7)

Core 7
Core References
Signature, Permissions Required signature permissions-required
VDB-376145 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/vuln/376145/cti
Vdb Entry, Technical Description vdb-entry technical-description
VDB-376145 | RT-Thread Parameter lwp_syscall.c sys_ioctl divide by zero
https://vuldb.com/vuln/376145
Third Party Advisory third-party-advisory
CVE-2026-14629 | CVE Analysis and Report
https://vuldb.com/cve/CVE-2026-14629
Third Party Advisory third-party-advisory
Submit #845610 | RT-Thread v5.2.2 Improper Handling of Parameters
https://vuldb.com/submit/845610

Scores

CVSS v3 4.3
EPSS 0.0031
EPSS Percentile 23.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-369 CWE-404
Status published
Products (3)
None/RT-Thread 5.2.0
None/RT-Thread 5.2.1
None/RT-Thread 5.2.2
Published Jul 04, 2026
Tracked Since Jul 04, 2026