net: icmp: Out of bound memory read_CVE-2025-12899

6.5 / 10

MEDIUM

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

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.

Basic Information

ID CVE-2025-12899

Source zephyr

Published Jan 30, 2026 at 05:34

Affected Product

Vendor zephyrproject-rtos

Product Zephyr

Version *

Affected Versions zephyrproject-rtos Zephyr *

CWE Classification

CWE-843

References

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

{
    "lastseen": "",
    "description": "A flaw in Zephyr\u2019s 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": "2026-01-30T05:34:19.703Z",
    "modified": "2026-01-30T05:34:19.703Z",
    "type": "cve",
    "title": "net: icmp: Out of bound memory read",
    "source": "zephyr",
    "references": "https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-c2vg-hj83-c2vg",
    "id": "CVE-2025-12899",
    "bulletinFamily": "",
    "cwe": [
        "CWE-843"
    ],
    "cvelist": null,
    "sourceData": "zephyrproject-rtos Zephyr *",
    "sourceHref": "",
    "cvss": {
        "score": 6.5,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Zephyr",
    "version": "*",
    "vendor": "zephyrproject-rtos",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}