{"id":"CVE-2020-26887","aliases":["EUVD-2020-19420","GHSA-fx9w-88ff-gqvq"],"status":"published","title":"FRITZ!OS before 7.21 on FRITZ!Box devices allows a bypass of a DNS Rebinding protection mechanism.","description":"FRITZ!OS before 7.21 on FRITZ!Box devices allows a bypass of a DNS Rebinding protection mechanism.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.01419,"percentile":0.73186,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"2020-10-23T04:57:57Z","modified":"2026-06-17T03:08:28Z","exploits":[{"source":"exploitdb","id":"EDB-49293","title":"FRITZ!Box 7.20 - DNS Rebinding Protection Bypass","type":"remote","platform":"hardware","date":"2020-12-18","url":"https://www.exploit-db.com/exploits/49293"}],"products":[{"vendor":"avm","product":"fritz\\!box_7490_firmware"}],"references":[{"url":"https://en.avm.de/news/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://www.redteam-pentesting.de/en/advisories/-advisories-publicised-vulnerability-analyses","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"http://packetstormsecurity.com/files/159606/FRITZ-Box-7.20-DNS-Rebinding-Protection-Bypass.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-26887"},{"url":"https://github.com/advisories/GHSA-fx9w-88ff-gqvq"}],"sources":{"cve":[{"id":"CVE-2020-26887","description":"FRITZ!OS before 7.21 on FRITZ!Box devices allows a bypass of a DNS Rebinding protection mechanism.","status":"published","published":"2020-10-23T04:57:57Z","modified":"2024-08-04T16:03:22.739Z","updated_at":"2026-11-02T14:35:46.129376Z"}],"euvd":[{"id":"EUVD-2020-19420","description":"FRITZ!OS before 7.21 on FRITZ!Box devices allows a bypass of a DNS Rebinding protection mechanism.","status":"published","published":"2020-10-23T04:57:57Z","modified":"2024-08-04T16:03:22Z","updated_at":"2026-11-03T03:07:14.653267Z"}],"ghsa":[{"id":"GHSA-fx9w-88ff-gqvq","title":"FRITZ!OS before 7.21 on FRITZ!Box devices allows a bypass of a DNS Rebinding protection mechanism.","description":"FRITZ!OS before 7.21 on FRITZ!Box devices allows a bypass of a DNS Rebinding protection mechanism.","status":"published","published":"2022-05-24T17:31:58Z","modified":"2023-01-29T05:04:28Z","updated_at":"2026-11-02T14:45:33.67375Z"}],"nvd":[{"id":"CVE-2020-26887","description":"FRITZ!OS before 7.21 on FRITZ!Box devices allows a bypass of a DNS Rebinding protection mechanism.","status":"published","published":"2020-10-23T05:15:13.517Z","modified":"2026-06-17T03:08:28.263Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":4.6,"vector":"AV:L/AC:L/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:20.704992Z"}]}}