Vulnerability details

CVE-2025-5866

RT-Thread

RT-Thread lwp_syscall.c sys_sigprocmask array index

CVSS 4.0

8.6High

Official 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 scores

Score	Version	Source	Vector
8.6High	4.0	CVEProject cvelistV5 (CNA) (VulDB)	`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`
8.0High	3.1	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:R`
8.0High	3.0	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:R`
7.4High	2.0	CVEProject cvelistV5 (CNA) (VulDB)	`AV:A/AC:M/Au:S/C:C/I:C/A:C/E:ND/RL:ND/RC:UR`

Affected products

Vendor	Product	Versions	Source
—	RT-Thread	5.1.0	CVEProject cvelistV5 (CNA)

References and advisories

https://vuldb.com/?id.311625 vdb-entrytechnical-description
https://vuldb.com/?ctiid.311625 signaturepermissions-required
https://vuldb.com/?submit.584127 third-party-advisory
https://github.com/RT-Thread/rt-thread/issues/10300 issue-tracking

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Details

Published: 2025-06-09
Last updated: 2025-06-09
State: Published
Assigner (CNA): VulDB

Exploit prediction (EPSS)

0.9%

Probability of exploitation in 30 days

60%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: Proof of concept
Technical impact: Total

Weaknesses (CWE)

CWE-129
Improper Validation of Array Index
CWE-119
Memory Corruption