Is CVE-2026-14605 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-14605 being exploited in the wild.

How severe is CVE-2026-14605?

High severity, with a CVSS score of 7.8, published 3 July 2026.

Is there a fix for CVE-2026-14605?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-14605 attacked?

It is attacked with local access, in an operating system.

Am I affected by CVE-2026-14605?

Check whether you run RT-Thread at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-14605: RT-Thread stack overflow in ls1c CAN Handler recvmsg

CVE-2026-14605 · Severity: high · CVSS 7.8 · Published 2026-07-03

A security vulnerability has been identified in RT-Thread, an open-source operating system used for Internet of Things (IoT) devices. The flaw exists in the component that handles Controller Area Network (CAN) communications, which are commonly used in automotive and industrial systems. If exploited, a local attacker could cause a system crash or potentially gain unauthorized control over the device, impacting the reliability and security of the connected hardware.

Technologies: RT-Thread. Vendors: RT-Thread.

Quick answers

Is CVE-2026-14605 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-14605 being exploited in the wild.
How severe is CVE-2026-14605?: High severity, with a CVSS score of 7.8, published 3 July 2026.
Which products and versions are affected?: RT-Thread up to 5.0.2.
Is there a fix for CVE-2026-14605?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-14605 attacked?: It is attacked with local access, in an operating system.
Am I affected by CVE-2026-14605?: Check whether you run RT-Thread at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A stack-based buffer overflow vulnerability exists in RT-Thread up to version 5.0.2 within the 'recvmsg' function of the ls1c CAN Handler (specifically in bsp/loongson/ls1cdev/libraries/ls1c_can.h). The root cause is the improper validation of the Data Length Code (DLC) from incoming CAN messages; the system trusts the raw DLC value and writes data beyond the bounds of the 'rt_can_msg' structure. This is a local attack requiring low privileges, as the attacker must be able to interact with the CAN interface. Successful exploitation can lead to a complete compromise of confidentiality, integrity, and availability. As of the advisory date, the vendor has not responded to the disclosure.

Affected products

RT-Thread RT-Thread up to 5.0.2

Timeline

2026-07-03: advisory: NVD publication date
2026-07-03: disclosed: Public disclosure of the vulnerability and exploit availability

References

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