{"id":"CVE-2025-55293","state":"PUBLISHED","title":"Meshtastic allows crafting of specific NodeInfo packets that overwrite any publicKey saved in the NodeDB","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.","publishedAt":"2025-08-18T17:24:35.254Z","updatedAt":"2025-08-18T17:41:25.082Z","severity":{"score":9.4,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["meshtastic firmware"],"affected":[{"vendor":"meshtastic","product":"firmware","versions":[{"version":"< 2.6.3","status":"affected"}]}],"references":["https://github.com/meshtastic/firmware/security/advisories/GHSA-95pq-gj5v-4fg2","https://github.com/meshtastic/firmware/pull/6372","https://github.com/meshtastic/firmware/commit/cf7f0f9d0895602df3453a4f5cfea843f4e09744"],"weaknesses":["CWE-287"],"ingestedAt":"2026-10-29T20:09:31.862Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/55xxx/CVE-2025-55293.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-55293","state":"PUBLISHED","datePublished":"2025-08-18T17:24:35.254Z","dateUpdated":"2025-08-18T17:41:25.082Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2025-08-12T16:15:30.237Z"},"containers":{"cna":{"title":"Meshtastic allows crafting of specific NodeInfo packets that overwrite any publicKey saved in the NodeDB","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"meshtastic","product":"firmware","versions":[{"version":"< 2.6.3","status":"affected"}]}],"references":[{"url":"https://github.com/meshtastic/firmware/security/advisories/GHSA-95pq-gj5v-4fg2","name":"https://github.com/meshtastic/firmware/security/advisories/GHSA-95pq-gj5v-4fg2","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/meshtastic/firmware/pull/6372","name":"https://github.com/meshtastic/firmware/pull/6372","tags":["x_refsource_MISC"]},{"url":"https://github.com/meshtastic/firmware/commit/cf7f0f9d0895602df3453a4f5cfea843f4e09744","name":"https://github.com/meshtastic/firmware/commit/cf7f0f9d0895602df3453a4f5cfea843f4e09744","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":9.4,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-287","lang":"en","description":"CWE-287: Improper Authentication","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2025-08-18T17:24:35.254Z"},"source":{"advisory":"GHSA-95pq-gj5v-4fg2","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-08-18T17:41:12.799937Z","id":"CVE-2025-55293","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-08-18T17:41:25.082Z"}}]}}}