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Case File

CVE-2021-3320

MEDIUM · CVSS 5.9 EPSS 0.85% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-05-25 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.9. It affects GitHub. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

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

GitHub PoC Links

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

CVE
CVE-2021-3320
Severity
MEDIUM
CVSS
5.9
EPSS
0.85%
GitHub

Original NVD Description

Type Confusion in 802154 ACK Frames Handling. Zephyr versions >= v2.4.0 contain NULL Pointer Dereference (CWE-476). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-27r3-rxch-2hm7

Related CVEs

Other vulnerabilities affecting the same vendor(s)