{ "id": "CVE-2025-27840", "sourceIdentifier": "cve@mitre.org", "published": "2025-03-08T20:15:36.027", "lastModified": "2025-03-12T14:58:54.130", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [ { "lang": "en", "value": "Espressif ESP32 chips allow 29 hidden HCI commands, such as 0xFC02 (Write memory)." }, { "lang": "es", "value": "Los chips Espressif ESP32 permiten 29 comandos HCI ocultos, como 0xFC02 (Escribir memoria)." } ], "metrics": { "cvssMetricV31": [ { "source": "cve@mitre.org", "type": "Secondary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:L", "baseScore": 6.8, "baseSeverity": "MEDIUM", "attackVector": "PHYSICAL", "attackComplexity": "HIGH", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "LOW" }, "exploitabilityScore": 0.3, "impactScore": 6.0 }, { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N", "baseScore": 6.8, "baseSeverity": "MEDIUM", "attackVector": "PHYSICAL", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE" }, "exploitabilityScore": 0.5, "impactScore": 5.8 } ] }, "weaknesses": [ { "source": "cve@mitre.org", "type": "Secondary", "description": [ { "lang": "en", "value": "CWE-912" } ] }, { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "NVD-CWE-Other" } ] } ], "configurations": [ { "operator": "AND", "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:espressif:esp32_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "C81AEA93-C163-4E5C-A25D-D2903742C9EE" } ] }, { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": false, "criteria": "cpe:2.3:h:espressif:esp32:-:*:*:*:*:*:*:*", "matchCriteriaId": "D1024B06-380B-4116-B7F9-A21A03534B0C" } ] } ] } ], "references": [ { "url": "https://cheriot.org/auditing/backdoor/2025/03/09/no-esp32-style-backdoor.html", "source": "cve@mitre.org", "tags": [ "Third Party Advisory", "Technical Description" ] }, { "url": "https://darkmentor.com/blog/esp32_non-backdoor/", "source": "cve@mitre.org", "tags": [ "Exploit", "Third Party Advisory", "Technical Description" ] }, { "url": "https://flyingpenguin.com/?p=67838", "source": "cve@mitre.org", "tags": [ "Third Party Advisory", "Technical Description" ] }, { "url": "https://github.com/TarlogicSecurity/Talks/blob/main/2025_RootedCon_BluetoothTools.pdf", "source": "cve@mitre.org", "tags": [ "Third Party Advisory" ] }, { "url": "https://github.com/em0gi/CVE-2025-27840", "source": "cve@mitre.org", "tags": [ "Product" ] }, { "url": "https://github.com/esphome/esphome/discussions/8382", "source": "cve@mitre.org", "tags": [ "Issue Tracking" ] }, { "url": "https://github.com/orgs/espruino/discussions/7699", "source": "cve@mitre.org", "tags": [ "Issue Tracking" ] }, { "url": "https://news.ycombinator.com/item?id=43301369", "source": "cve@mitre.org", "tags": [ "Issue Tracking" ] }, { "url": "https://news.ycombinator.com/item?id=43308740", "source": "cve@mitre.org", "tags": [ "Issue Tracking" ] }, { "url": "https://reg.rootedcon.com/cfp/schedule/talk/5", "source": "cve@mitre.org", "tags": [ "Third Party Advisory" ] }, { "url": "https://www.bleepingcomputer.com/news/security/undocumented-backdoor-found-in-bluetooth-chip-used-by-a-billion-devices/", "source": "cve@mitre.org", "tags": [ "Exploit", "Press/Media Coverage" ] }, { "url": "https://www.bleepingcomputer.com/news/security/undocumented-commands-found-in-bluetooth-chip-used-by-a-billion-devices/", "source": "cve@mitre.org", "tags": [ "Exploit", "Press/Media Coverage" ] }, { "url": "https://www.espressif.com/en/news/Response_ESP32_Bluetooth", "source": "cve@mitre.org", "tags": [ "Press/Media Coverage" ] }, { "url": "https://www.tarlogic.com/news/backdoor-esp32-chip-infect-ot-devices/", "source": "cve@mitre.org", "tags": [ "Third Party Advisory" ] }, { "url": "https://x.com/pascal_gujer/status/1898442439704158276", "source": "cve@mitre.org", "tags": [ "Third Party Advisory" ] } ] }