CVE-2025-12899

CVSS Score & Metrics

Base Score

6.5 / 10

Vector String

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

Vulnerability Description

A flaw in Zephyr’s network stack allows an IPv4 packet containing ICMP type 128 to be misclassified as an ICMPv6 Echo Request. This results in an out-of-bounds memory read and creates a potential information-leak vulnerability in the networking subsystem.

Vulnerability Details

Published Date

January 30, 2026

Last Modified

February 04, 2026

CWE ID

CWE-843

Source

NVD

Vendor

zephyrproject-rtos

Product

Zephyr

External References

https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-c2vg-hj83-c2vg

CVSS Score & Metrics

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