VULNERABILITY INTELLIGENCE

CVE-2021-3320

CVSS score5.9 MEDIUM
EPSS probability0.85%
CISA KEVNot currently listed
Published2021-05-25
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

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

Weakness classification

  • CWE-476: NULL Pointer Dereference
  • CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')

Primary references