CVE-2025-5866 — HIGH (8.0) — White Hats Nepal

Vulnerability Description

A vulnerability classified as critical has been found in RT-Thread 5.1.0. This affects the function sys_sigprocmask of the file rt-thread/components/lwp/lwp_syscall.c. The manipulation of the argument how leads to improper validation of array index.

CVSS Score

8.0

HIGH

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

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Rt-Thread	Rt-Thread	5.1.0

Related Weaknesses (CWE)

CWE-119 CWE-129

References

https://github.com/RT-Thread/rt-thread/issues/10300ExploitIssue TrackingThird Party Advisory
https://vuldb.com/?ctiid.311625Permissions RequiredVDB Entry
https://vuldb.com/?id.311625Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.584127Third Party AdvisoryVDB Entry

FAQ

What is CVE-2025-5866?

CVE-2025-5866 is a vulnerability with a CVSS score of 8.0 (HIGH). A vulnerability classified as critical has been found in RT-Thread 5.1.0. This affects the function sys_sigprocmask of the file rt-thread/components/lwp/lwp_syscall.c. The manipulation of the argument...

How severe is CVE-2025-5866?

CVE-2025-5866 has been rated HIGH with a CVSS base score of 8.0/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-5866?

Check the references section above for vendor advisories and patch information. Affected products include: Rt-Thread Rt-Thread.