VULNERABILITY INTELLIGENCE

CVE-2021-3323

CVSS score8.3 HIGH

EPSS probability0.92%

CISA KEVNot currently listed

Published2021-10-12

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

Description

Integer Underflow in 6LoWPAN IPHC Header Uncompression in Zephyr. Zephyr versions >= >=2.4.0 contain Integer Underflow (Wrap or Wraparound) (CWE-191). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-89j6-qpxf-pfpc

Weakness classification

vulnerabilities@zephyrproject.org: CWE-191
nvd@nist.gov: CWE-191

Primary references

vulnerabilities@zephyrproject.org — Exploit, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Patch, Third Party Advisory