Buffer overflow in Rt-Thread
CVE-2026-14605
A vulnerability was identified in RT-Thread up to 5.0.2. Affected by this vulnerability is the function recvmsg in the library bsp/loongson/ls1cdev/libraries/ls1c_can.h of the component ls1c CAN Handler. Such manipulation leads to stack-based buffer overflow. Local access is required to approach this attack. The exploit is publicly available and might be used. 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/376113 (technical-description, vdb-entry)
- vuldb.com/vuln/376113/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-14605 (third-party-advisory)
- vuldb.com/submit/844580 (third-party-advisory)
- github.com/RT-Thread/rt-thread/issues/11424 (issue-tracking, exploit)
- github.com/RT-Thread/rt-thread/ (product)
Frequently asked questions
- What is CVE-2026-14605?
- CVE-2026-14605 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-2026-14605?
- High severity. CVSS v3 base score is 7.8 out of 10.