CVE-2025-5865

Name: CVE-2025-5865
Creator: NVD / NIST
Published: 2025-06-09T07:15:22.66+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.6/10EPSS 0.78%

Last modified Jun 17, 2026

CVE-2025-5865 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. A vulnerability was found in RT-Thread 5.1.0. It has been rated as critical. EPSS estimates a 0.78% chance of exploitation in the next 30 days.

Description

A vulnerability was found in RT-Thread 5.1.0. It has been rated as critical. Affected by this issue is the function sys_select of the file rt-thread/components/lwp/lwp_syscall.c of the component Parameter Handler. The manipulation of the argument timeout leads to memory corruption. The vendor explains, that "[t]he timeout parameter should be checked to check if it can be accessed correctly in kernel mode and used temporarily in kernel memory."

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0

8.6/10

CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.78%

51.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Rt-Thread	Rt-Thread	5.1.0

References

https://github.com/RT-Thread/rt-thread/issues/10298Exploit, Issue Tracking, Third Party Advisory
https://github.com/RT-Thread/rt-thread/issues/10298#issuecomment-2894952150Exploit, Issue Tracking, Third Party Advisory
https://vuldb.com/?ctiid.311624Permissions Required, VDB Entry
https://vuldb.com/?id.311624Third Party Advisory, VDB Entry
https://vuldb.com/?submit.584124Third Party Advisory, VDB Entry
https://github.com/RT-Thread/rt-thread/issues/10298Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Jun 9, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-5865?

How severe is CVE-2025-5865?

CVE-2025-5865 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 0.78% probability of exploitation in the next 30 days.

How do I fix CVE-2025-5865?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-5865?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST