{"id":"CVE-2020-9277","aliases":["EUVD-2020-30106","GHSA-4vh6-rxvj-rwh4"],"status":"published","title":"An issue was discovered on D-Link DSL-2640B B2 EU_4.01B devices. Authentication can be bypassed...","description":"An issue was discovered on D-Link DSL-2640B B2 EU_4.01B devices. Authentication can be bypassed when accessing cgi modules. This allows one to perform administrative tasks (e.g., modify the admin password) with no authentication.","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":"2026-11-09","score":0.02464,"percentile":0.84589,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2020-04-20T22:40:32Z","modified":"2026-06-17T03:27:41Z","products":[{"vendor":"dlink","product":"dsl-2640b_firmware"}],"references":[{"url":"https://www.dlink.com/en/security-bulletin","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://raelize.com/posts/d-link-dsl-2640b-security-advisories/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://raelize.com/advisories/CVE-2020-9277_D-Link-DSL-2640B_CGI-Authentication-bypass_v1.0.txt","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-9277"},{"url":"https://github.com/advisories/GHSA-4vh6-rxvj-rwh4"}],"sources":{"cve":[{"id":"CVE-2020-9277","description":"An issue was discovered on D-Link DSL-2640B B2 EU_4.01B devices. Authentication can be bypassed when accessing cgi modules. This allows one to perform administrative tasks (e.g., modify the admin password) with no authentication.","status":"published","published":"2020-04-20T22:40:32Z","modified":"2024-08-04T10:26:16.368Z","updated_at":"2026-11-02T14:35:49.538427Z"}],"euvd":[{"id":"EUVD-2020-30106","description":"An issue was discovered on D-Link DSL-2640B B2 EU_4.01B devices. Authentication can be bypassed when accessing cgi modules. This allows one to perform administrative tasks (e.g., modify the admin password) with no authentication.","status":"published","published":"2020-04-20T22:40:32Z","modified":"2024-08-04T10:26:16Z","updated_at":"2026-11-03T03:07:54.599277Z"}],"ghsa":[{"id":"GHSA-4vh6-rxvj-rwh4","title":"An issue was discovered on D-Link DSL-2640B B2 EU_4.01B devices. Authentication can be bypassed...","description":"An issue was discovered on D-Link DSL-2640B B2 EU_4.01B devices. Authentication can be bypassed when accessing cgi modules. This allows one to perform administrative tasks (e.g., modify the admin password) with no authentication.","status":"published","published":"2022-05-24T17:15:57Z","modified":"2023-01-29T05:02:37Z","updated_at":"2026-11-02T14:45:07.602262Z"}],"nvd":[{"id":"CVE-2020-9277","description":"An issue was discovered on D-Link DSL-2640B B2 EU_4.01B devices. Authentication can be bypassed when accessing cgi modules. This allows one to perform administrative tasks (e.g., modify the admin password) with no authentication.","status":"published","published":"2020-04-20T23:15:12.707Z","modified":"2026-06-17T03:27:41.347Z","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":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:05:59.718774Z"}]}}