What’s Vulnerable › Vulnerabilities

CVE-2025-5868: RT-Thread lwp_syscall.c sys_thread_sigprocmask array index

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-06-09 · updated 2026-06-17
• Weakness: CWE-119

Description

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

Affected products

• RT-Thread: 5.1.0

References

• https://github.com/RT-Thread/rt-thread/issues/10303
• https://vuldb.com/?ctiid.311627
• https://vuldb.com/?id.311627
• https://vuldb.com/?submit.584130

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