{"id":"CVE-2022-29855","aliases":["EUVD-2022-34173","GHSA-4f6f-x4m3-rhqj"],"status":"published","title":"Mitel 6800 and 6900 Series SIP phone devices through 2022-04-27 have \"undocumented functionality....","description":"Mitel 6800 and 6900 Series SIP phone devices through 2022-04-27 have \"undocumented functionality.\" A vulnerability in Mitel 6800 Series and 6900 Series SIP phones excluding 6970, versions 5.1 SP8 (5.1.0.8016) and earlier, and 6.0 (6.0.0.368) through 6.1 HF4 (6.1.0.165), could allow a unauthenticated attacker with physical access to the phone to gain root access due to insufficient access control for test functionality during system startup. A successful exploit could allow access to sensitive information and code execution.","severity":{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00789,"percentile":0.56553,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-863"],"published":"2022-05-11T19:12:48Z","modified":"2026-06-17T04:40:50Z","products":[{"vendor":"mitel","product":"6865i_sip_firmware"},{"vendor":"mitel","product":"6867i_sip_firmware"},{"vendor":"mitel","product":"6869i_sip_firmware"},{"vendor":"mitel","product":"6873i_sip_firmware"},{"vendor":"mitel","product":"6905_sip_firmware"},{"vendor":"mitel","product":"6910_sip_firmware"},{"vendor":"mitel","product":"6920_sip_firmware"},{"vendor":"mitel","product":"6930_sip_firmware"},{"vendor":"mitel","product":"6940_sip_firmware"}],"references":[{"url":"https://www.mitel.com/support/security-advisories","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://www.mitel.com/support/security-advisories/mitel-product-security-advisory-22-0004","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://www.syss.de/pentest-blog/undocumented-functionality-backdoor-in-mitel-desk-phones-syss-2022-021","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"http://seclists.org/fulldisclosure/2022/Jun/32","tags":["mailing-list","x_refsource_FULLDISC","x_transferred","Exploit","Mailing List","Third Party Advisory"]},{"url":"http://packetstormsecurity.com/files/167547/Mitel-6800-6900-Series-SIP-Phones-Backdoor-Access.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-29855"},{"url":"https://github.com/advisories/GHSA-4f6f-x4m3-rhqj"}],"sources":{"cve":[{"id":"CVE-2022-29855","description":"Mitel 6800 and 6900 Series SIP phone devices through 2022-04-27 have \"undocumented functionality.\" A vulnerability in Mitel 6800 Series and 6900 Series SIP phones excluding 6970, versions 5.1 SP8 (5.1.0.8016) and earlier, and 6.0 (6.0.0.368) through 6.1 HF4 (6.1.0.165), could allow a unauthenticated attacker with physical access to the phone to gain root access due to insufficient access control for test functionality during system startup. A successful exploit could allow access to sensitive information and code execution.","status":"published","published":"2022-05-11T19:12:48Z","modified":"2024-08-03T06:33:42.841Z","updated_at":"2026-11-02T14:34:36.270817Z"}],"euvd":[{"id":"EUVD-2022-34173","description":"Mitel 6800 and 6900 Series SIP phone devices through 2022-04-27 have \"undocumented functionality.\" A vulnerability in Mitel 6800 Series and 6900 Series SIP phones excluding 6970, versions 5.1 SP8 (5.1.0.8016) and earlier, and 6.0 (6.0.0.368) through 6.1 HF4 (6.1.0.165), could allow a unauthenticated attacker with physical access to the phone to gain root access due to insufficient access control for test functionality during system startup. A successful exploit could allow access to sensitive information and code execution.","status":"published","published":"2022-05-11T19:12:48Z","modified":"2024-08-03T06:33:42Z","updated_at":"2026-11-03T03:25:37.579336Z"}],"ghsa":[{"id":"GHSA-4f6f-x4m3-rhqj","title":"Mitel 6800 and 6900 Series SIP phone devices through 2022-04-27 have \"undocumented functionality....","description":"Mitel 6800 and 6900 Series SIP phone devices through 2022-04-27 have \"undocumented functionality.\" A vulnerability in Mitel 6800 Series and 6900 Series SIP phones excluding 6970, versions 5.1 SP8 (5.1.0.8016) and earlier, and 6.0 (6.0.0.368) through 6.1 HF4 (6.1.0.165), could allow a unauthenticated attacker with physical access to the phone to gain root access due to insufficient access control for test functionality during system startup. A successful exploit could allow access to sensitive information and code execution.","status":"published","published":"2022-05-12T00:00:22Z","modified":"2023-01-27T05:02:04Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"medium"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:42:00.879238Z"}],"nvd":[{"id":"CVE-2022-29855","description":"Mitel 6800 and 6900 Series SIP phone devices through 2022-04-27 have \"undocumented functionality.\" A vulnerability in Mitel 6800 Series and 6900 Series SIP phones excluding 6970, versions 5.1 SP8 (5.1.0.8016) and earlier, and 6.0 (6.0.0.368) through 6.1 HF4 (6.1.0.165), could allow a unauthenticated attacker with physical access to the phone to gain root access due to insufficient access control for test functionality during system startup. A successful exploit could allow access to sensitive information and code execution.","status":"published","published":"2022-05-11T20:15:08.787Z","modified":"2026-06-17T04:40:50.57Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:07:19.51203Z"}]}}