Meshtastic allows crafting of specific NodeInfo packets that overwrite any publicKey saved in the NodeDB_CVE-2025-55293

{
    "lastseen": "",
    "description": "Meshtastic is an open source mesh networking solution. Prior to v2.6.3, an attacker can send NodeInfo with a empty publicKey first, then overwrite it with a new key. First sending a empty key bypasses 'if (p.public_key.size > 0) {', clearing the existing publicKey (and resetting the size to 0) for a known node. Then a new key bypasses 'if (info->user.public_key.size > 0) {', and this malicious key is stored in NodeDB. This vulnerability is fixed in 2.6.3.",
    "published": "2025-08-18T17:24:35.254Z",
    "modified": "2025-08-18T17:41:25.082Z",
    "type": "cve",
    "title": "Meshtastic allows crafting of specific NodeInfo packets that overwrite any publicKey saved in the NodeDB",
    "source": "GitHub_M",
    "references": "https://github.com/meshtastic/firmware/security/advisories/GHSA-95pq-gj5v-4fg2\nhttps://github.com/meshtastic/firmware/pull/6372\nhttps://github.com/meshtastic/firmware/commit/cf7f0f9d0895602df3453a4f5cfea843f4e09744",
    "id": "CVE-2025-55293",
    "bulletinFamily": "",
    "cwe": [
        "CWE-287"
    ],
    "cvelist": null,
    "sourceData": "meshtastic firmware < 2.6.3",
    "sourceHref": "",
    "cvss": {
        "score": 9.4,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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": "firmware",
    "version": "< 2.6.3",
    "vendor": "meshtastic",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}