CVE-2025-55292

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{"affected": [{"affectedData": [{"product": "firmware", "vendor": "meshtastic", "versions": [{"status": "affected", "version": "<= 2.6.2"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:meshtastic:meshtastic_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "3B2CC022-CD93-4C68-8211-93C5386E4004", "versionEndExcluding": "2.7.6", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Meshtastic is an open source mesh networking solution. In the current Meshtastic architecture, a Node is identified by their NodeID, generated from the MAC address, rather than their public key. This aspect downgrades the security, specifically by abusing the HAM mode which doesn't use encryption. An attacker can, as such, forge a NodeInfo on behalf of a victim node advertising that the HAM mode is enabled. This, in turn, will allow the other nodes on the mesh to accept the new information and overwriting the NodeDB. The other nodes will then only be able to send direct messages to the victim by using the shared channel key instead of the PKC. Additionally, because HAM mode by design doesn't provide any confidentiality or authentication of information, the attacker could potentially also be able to change the Node details, like the full name, short code, etc. To keep the attack persistent, it is enough to regularly resend the forged NodeInfo, in particular right after the victim sends their own. A patch is available in version 2.7.6.834c3c5."}, {"lang": "es", "value": "Meshtastic es una soluci\u00f3n de red mallada de c\u00f3digo abierto. En la arquitectura actual de Meshtastic, un Nodo se identifica por su NodeID, generado a partir de la direcci\u00f3n MAC, en lugar de su clave p\u00fablica. Este aspecto degrada la seguridad, espec\u00edficamente al abusar del modo HAM que no utiliza cifrado. Un atacante puede, como tal, falsificar un NodeInfo en nombre de un nodo v\u00edctima anunciando que el modo HAM est\u00e1 habilitado. Esto, a su vez, permitir\u00e1 a los otros nodos en la malla aceptar la nueva informaci\u00f3n y sobrescribir la NodeDB. Los otros nodos solo podr\u00e1n entonces enviar mensajes directos a la v\u00edctima utilizando la clave de canal compartida en lugar de la PKC. Adem\u00e1s, debido a que el modo HAM por dise\u00f1o no proporciona ninguna confidencialidad o autenticaci\u00f3n de la informaci\u00f3n, el atacante tambi\u00e9n podr\u00eda potencialmente cambiar los detalles del Nodo, como el nombre completo, el c\u00f3digo corto, etc. Para mantener el ataque persistente, es suficiente con reenviar regularmente el NodeInfo falsificado, en particular justo despu\u00e9s de que la v\u00edctima env\u00ede el suyo propio. Un parche est\u00e1 disponible en la versi\u00f3n 2.7.6.834c3c5."}], "id": "CVE-2025-55292", "lastModified": "2026-06-17T09:41:35.800", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.2, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.2, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-55292", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-01-28T15:10:33.593847Z", "version": "2.0.3"}}]}, "published": "2026-01-28T00:15:49.607", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/meshtastic/firmware/commit/e5e8683cdba133e726033101586c3235a8678893"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "url": "https://github.com/meshtastic/firmware/security/advisories/GHSA-45vg-3f35-7ch2"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-348"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"created": "2026-01-28T12:22:27.374614+00:00", "updated": "2026-01-28T12:22:27.374641+00:00", "vendors": ["meshtastic", "meshtastic$PRODUCT$firmware"]}