CVE-2025-12899 — MEDIUM (6.5)

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.

CVSS Score

6.5

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

LOW

Related Weaknesses (CWE)

CWE-843

References

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

FAQ

What is CVE-2025-12899?

CVE-2025-12899 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 info...

How severe is CVE-2025-12899?

CVE-2025-12899 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-12899?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.