Buffer overflow in Rt-Thread
CVE-2026-14606
A security flaw has been discovered in RT-Thread up to 5.0.2. Affected by this issue is the function CAN_Receive in the library bsp/synwit/libraries/SWM341_CSL/CMSIS/DeviceSupport/SWM341.h of the component SWM341 CAN Handler. Performing a manipulation results in stack-based buffer overflow. The attack needs to be approached locally. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (8.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 8.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Rt-Thread — versions 5.0.0, 5.0.1, 5.0.2
Weakness classification (CWE)
References
- vuldb.com/vuln/376114 (technical-description, vdb-entry)
- vuldb.com/vuln/376114/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-14606 (third-party-advisory)
- vuldb.com/submit/844591 (third-party-advisory)
- github.com/RT-Thread/rt-thread/issues/11425 (issue-tracking, exploit)
- github.com/RT-Thread/rt-thread/ (product)
Frequently asked questions
- What is CVE-2026-14606?
- CVE-2026-14606 is a high-severity vulnerability in Rt-Thread, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2026-07-03.
- How severe is CVE-2026-14606?
- High severity. CVSS v3 base score is 7.8 out of 10.