AUGUST 4, 2026
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Case File

CVE-2021-3431

MEDIUM · CVSS 4.3 EPSS 0.85% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-06-28 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links
github.com ↗

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-3431
Severity
MEDIUM
CVSS
4.3
EPSS
0.85%
GitHub

Original NVD Description

Assertion reachable with repeated LL_FEATURE_REQ. Zephyr versions >= v2.5.0 contain Reachable Assertion (CWE-617). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7548-5m6f-mqv9