CVE-2023-7060: Missing Security Control in Zephyr OS IP Packet Handling

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2024-03-15 · updated 2026-06-17
Weakness: CWE-20

Description

Zephyr OS IP packet handling does not properly drop IP packets arriving on an external interface with a source address equal to 127.0.01 or the destination address.

Affected products

zephyrproject zephyr: before 3.6.0 — fixed in 3.6.0

How to fix

Upgrade to a fixed version: zephyrproject zephyr 3.6.0. Check the vendor advisory for mitigations.

References

https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-fjc8-223c-qgqr
https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-fjc8-223c-qgqr

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