{"id":"CVE-2026-4205","state":"PUBLISHED","title":"D-Link DNS-1550-04 app_mgr.cgi FTP_Server_BlockIP_Del command injection","description":"A vulnerability has been found in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW, DNS-321, DNR-322L, DNS-323, DNS-325, DNS-326, DNS-327L, DNR-326, DNS-340L, DNS-343, DNS-345, DNS-726-4, DNS-1100-4, DNS-1200-05 and DNS-1550-04 up to 20260205. The impacted element is the function cgi_refresh_db/FTP_Server_BlockIP_Add/FTP_Server_BlockIP_Del of the file /cgi-bin/app_mgr.cgi. Such manipulation leads to command injection. The attack can be executed remotely. The exploit has been disclosed to the public and may be used.","publishedAt":"2026-03-16T01:32:09.418Z","updatedAt":"2026-03-16T14:40:36.751Z","severity":{"score":5.3,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","source":"VulDB"},"assigner":"VulDB","products":["D-Link DNS-120","D-Link DNR-202L","D-Link DNS-315L","D-Link DNS-320","D-Link DNS-320L","D-Link DNS-320LW","D-Link DNS-321","D-Link DNR-322L","D-Link DNS-323","D-Link DNS-325","D-Link DNS-326","D-Link DNS-327L","D-Link DNR-326","D-Link DNS-340L","D-Link DNS-343","D-Link DNS-345","D-Link DNS-726-4","D-Link DNS-1100-4","D-Link DNS-1200-05","D-Link DNS-1550-04"],"affected":[{"vendor":"D-Link","product":"DNS-120","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNR-202L","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-315L","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-320","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-320L","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-320LW","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-321","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNR-322L","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-323","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-325","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-326","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-327L","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNR-326","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-340L","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-343","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-345","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-726-4","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-1100-4","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-1200-05","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-1550-04","versions":[{"version":"20260205","status":"affected"}]}],"references":["https://vuldb.com/?id.351117","https://vuldb.com/?ctiid.351117","https://vuldb.com/?submit.770410","https://vuldb.com/?submit.770411","https://vuldb.com/?submit.770412","https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_131/131.md","https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_132/132.md","https://www.dlink.com/"],"weaknesses":["CWE-77","CWE-74"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/4xxx/CVE-2026-4205.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-4205","state":"PUBLISHED","datePublished":"2026-03-16T01:32:09.418Z","dateUpdated":"2026-03-16T14:40:36.751Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-03-15T11:36:55.279Z"},"containers":{"cna":{"title":"D-Link DNS-1550-04 app_mgr.cgi FTP_Server_BlockIP_Del command injection","descriptions":[{"lang":"en","value":"A vulnerability has been found in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW, DNS-321, DNR-322L, DNS-323, DNS-325, DNS-326, DNS-327L, DNR-326, DNS-340L, DNS-343, DNS-345, DNS-726-4, DNS-1100-4, DNS-1200-05 and DNS-1550-04 up to 20260205. The impacted element is the function cgi_refresh_db/FTP_Server_BlockIP_Add/FTP_Server_BlockIP_Del of the file /cgi-bin/app_mgr.cgi. Such manipulation leads to command injection. The attack can be executed remotely. The exploit has been disclosed to the public and may be used."}],"affected":[{"vendor":"D-Link","product":"DNS-120","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNR-202L","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-315L","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-320","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-320L","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-320LW","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-321","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNR-322L","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-323","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-325","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-326","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-327L","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNR-326","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-340L","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-343","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-345","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-726-4","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-1100-4","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-1200-05","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-1550-04","versions":[{"version":"20260205","status":"affected"}]}],"references":[{"url":"https://vuldb.com/?id.351117","name":"VDB-351117 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