{"id":"CVE-2021-40859","aliases":["EUVD-2021-28015","GHSA-69pv-7jmq-p3xp"],"status":"published","title":"Backdoors were discovered in Auerswald COMpact 5500R 7.8A and 8.0B devices, that allow attackers...","description":"Backdoors were discovered in Auerswald COMpact 5500R 7.8A and 8.0B devices, that allow attackers with access to the web based management application full administrative access to the device.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.71979,"percentile":0.99436,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"2021-12-07T18:59:10Z","modified":"2026-06-17T04:07:33Z","exploits":[{"source":"exploitdb","id":"EDB-50569","title":"Auerswald COMpact 8.0B - Multiple Backdoors","type":"remote","platform":"hardware","date":"2021-12-06","url":"https://www.exploit-db.com/exploits/50569"},{"source":"nuclei","id":"CVE-2021-40859","title":"Auerswald COMpact 5500R 7.8A and 8.0B Devices Backdoor","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-40859.yaml"},{"source":"pocgithub","id":"419066074/CVE-2021-40859","title":"419066074/CVE-2021-40859","date":"2021-12-28","url":"https://github.com/419066074/CVE-2021-40859"},{"source":"pocgithub","id":"pussycat0x/CVE-2021-40859","title":"pussycat0x/CVE-2021-40859","date":"2021-12-29","url":"https://github.com/pussycat0x/CVE-2021-40859"}],"products":[{"vendor":"auerswald","product":"compact_5500r_firmware"}],"references":[{"url":"https://www.redteam-pentesting.de/en/advisories/-advisories-publicised-vulnerability-analyses","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://www.redteam-pentesting.de/en/advisories/rt-sa-2021-007/-auerswald-compact-multiple-backdoors","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-40859"},{"url":"https://github.com/advisories/GHSA-69pv-7jmq-p3xp"}],"sources":{"cve":[{"id":"CVE-2021-40859","description":"Backdoors were discovered in Auerswald COMpact 5500R 7.8A and 8.0B devices, that allow attackers with access to the web based management application full administrative access to the device.","status":"published","published":"2021-12-07T18:59:10Z","modified":"2024-08-04T02:51:07.465Z","updated_at":"2026-11-02T14:33:01.852999Z"}],"euvd":[{"id":"EUVD-2021-28015","description":"Backdoors were discovered in Auerswald COMpact 5500R 7.8A and 8.0B devices, that allow attackers with access to the web based management application full administrative access to the device.","status":"published","published":"2021-12-07T18:59:10Z","modified":"2024-08-04T02:51:07Z","updated_at":"2026-11-03T03:24:19.692229Z"}],"ghsa":[{"id":"GHSA-69pv-7jmq-p3xp","title":"Backdoors were discovered in Auerswald COMpact 5500R 7.8A and 8.0B devices, that allow attackers...","description":"Backdoors were discovered in Auerswald COMpact 5500R 7.8A and 8.0B devices, that allow attackers with access to the web based management application full administrative access to the device.","status":"published","published":"2021-12-08T00:01:02Z","modified":"2023-02-01T05:06:43Z","updated_at":"2026-11-02T14:50:24.546925Z"}],"nvd":[{"id":"CVE-2021-40859","description":"Backdoors were discovered in Auerswald COMpact 5500R 7.8A and 8.0B devices, that allow attackers with access to the web based management application full administrative access to the device.","status":"published","published":"2021-12-07T19:15:07.547Z","modified":"2026-06-17T04:07:33.233Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:07:01.811115Z"}]}}