{"id":"CVE-2021-43118","aliases":["EUVD-2021-30067","GHSA-3q87-6fcw-7mj7"],"status":"published","title":"A Remote Command Injection vulnerability exists in DrayTek Vigor 2960 1.5.1.3, DrayTek Vigor 3900...","description":"A Remote Command Injection vulnerability exists in DrayTek Vigor 2960 1.5.1.3, DrayTek Vigor 3900 1.5.1.3, and DrayTek Vigor 300B 1.5.1.3 via a crafted HTTP message containing malformed QUERY STRING in mainfunction.cgi, which could let a remote malicious user execute arbitrary code.","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":0.34845,"percentile":0.98454,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-77"],"published":"2022-03-29T19:37:57Z","modified":"2026-06-17T04:10:32Z","products":[{"vendor":"draytek","product":"vigor2960_firmware"},{"vendor":"draytek","product":"vigor300b_firmware"},{"vendor":"draytek","product":"vigor3900_firmware"}],"references":[{"url":"https://gist.github.com/Cossack9989/6034c077f46e4f06d0992e9f2fae7f26","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43118"},{"url":"https://github.com/advisories/GHSA-3q87-6fcw-7mj7"}],"sources":{"cve":[{"id":"CVE-2021-43118","description":"A Remote Command Injection vulnerability exists in DrayTek Vigor 2960 1.5.1.3, DrayTek Vigor 3900 1.5.1.3, and DrayTek Vigor 300B 1.5.1.3 via a crafted HTTP message containing malformed QUERY STRING in mainfunction.cgi, which could let a remote malicious user execute arbitrary code.","status":"published","published":"2022-03-29T19:37:57Z","modified":"2024-08-04T03:47:13.571Z","updated_at":"2026-11-02T14:32:56.689433Z"}],"euvd":[{"id":"EUVD-2021-30067","description":"A Remote Command Injection vulnerability exists in DrayTek Vigor 2960 1.5.1.3, DrayTek Vigor 3900 1.5.1.3, and DrayTek Vigor 300B 1.5.1.3 via a crafted HTTP message containing malformed QUERY STRING in mainfunction.cgi, which could let a remote malicious user execute arbitrary code.","status":"published","published":"2022-03-29T19:37:57Z","modified":"2024-08-04T03:47:13Z","updated_at":"2026-11-03T03:24:14.796505Z"}],"ghsa":[{"id":"GHSA-3q87-6fcw-7mj7","title":"A Remote Command Injection vulnerability exists in DrayTek Vigor 2960 1.5.1.3, DrayTek Vigor 3900...","description":"A Remote Command Injection vulnerability exists in DrayTek Vigor 2960 1.5.1.3, DrayTek Vigor 3900 1.5.1.3, and DrayTek Vigor 300B 1.5.1.3 via a crafted HTTP message containing malformed QUERY STRING in mainfunction.cgi, which could let a remote malicious user execute arbitrary code.","status":"published","published":"2022-03-30T00:00:14Z","modified":"2023-01-27T05:01:08Z","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"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T14:41:49.563138Z"}],"nvd":[{"id":"CVE-2021-43118","description":"A Remote Command Injection vulnerability exists in DrayTek Vigor 2960 1.5.1.3, DrayTek Vigor 3900 1.5.1.3, and DrayTek Vigor 300B 1.5.1.3 via a crafted HTTP message containing malformed QUERY STRING in mainfunction.cgi, which could let a remote malicious user execute arbitrary code.","status":"published","published":"2022-03-29T20:15:07.733Z","modified":"2026-06-17T04:10:32.177Z","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-77"],"updated_at":"2026-11-02T14:07:05.581807Z"}]}}