CVE-2025-5866CRITICAL 9.8EPSS p49.8%

CVE-2025-5866CVE-2025-5866

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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.74% probability of exploitation · percentile 49.8% · 2026-06-19T12:03:05Z
Published2025-06-09
Last modified2025-07-11

Underlying weaknesses· 2

CWE-119CWE-129

References

  1. https://github.com/RT-Thread/rt-thread/issues/10300
  2. https://vuldb.com/?ctiid.311625
  3. https://vuldb.com/?id.311625
  4. https://vuldb.com/?submit.584127

2

TypeTargetConfidenceTier
WeaknessImproper Restriction of Operations within the Bounds of a Memory Buffercwe-1190%live
WeaknessImproper Validation of Array Indexcwe-1290%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.