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.
Published: 2026-01-30
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
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Remediation

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History

Fri, 30 Jan 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 30 Jan 2026 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Zephyrproject-rtos
Zephyrproject-rtos zephyr
Vendors & Products Zephyrproject-rtos
Zephyrproject-rtos zephyr

Fri, 30 Jan 2026 05:45:00 +0000

Type Values Removed Values Added
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.
Title net: icmp: Out of bound memory read
Weaknesses CWE-843
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L'}

Subscriptions

Zephyrproject-rtos Zephyr
cve-icon MITRE

Status: PUBLISHED

Assigner: zephyr

Published:

Updated: 2026-01-30T14:47:21.249Z

Reserved: 2025-11-07T19:33:00.446Z

Link: CVE-2025-12899

cve-icon Vulnrichment

Updated: 2026-01-30T14:47:16.831Z

cve-icon NVD

Status : Deferred

Published: 2026-01-30T06:16:01.870

Modified: 2026-04-15T00:35:42.020

Link: CVE-2025-12899

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-01-30T08:42:17Z

Weaknesses