CVE-2021-3323

HIGH

Zephyr 2.4.0-2.4.9 - Integer Underflow in 6LoWPAN IPHC Header Uncompression

Title source: llm
STIX 2.1

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

References (1)

Core 1
Core References
Exploit, Patch, Third Party Advisory x_refsource_misc
http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-89j6-qpxf-pfpc

Scores

CVSS v3 8.3
EPSS 0.0089
EPSS Percentile 54.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

Details

CWE
CWE-191
Status published
Products (1)
zephyrproject/zephyr 2.4.0 - 2.5.0
Published Oct 12, 2021
Tracked Since Feb 18, 2026