CVE-2025-5866 is a critical vulnerability in RT-Thread 5.1.0, specifically within the sys_sigprocmask function in rt-thread/components/lwp/lwp_syscall.c. This flaw, stemming from improper validation of an array index when manipulating the 'how' argument, allows for remote code execution with high impact on confidentiality, integrity, and availability. With a CVSS score of 9.8, it is easily exploitable over the network without authentication or user interaction. Currently, there is no public exploit code, active exploitation, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
5.1.0CPE matchmatch criteria | cpe:2.3:o:rt-thread:rt-thread:5.1.0:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
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
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.