{"id":"CVE-2026-4203","aliases":["EUVD-2026-12275","GHSA-76q2-vqq4-gj3h"],"status":"published","title":"D-Link DNS-1550-04 network_mgr.cgi cgi_dhcpd command injection","description":"A vulnerability was detected 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. Impacted is the function cgi_portforwarding_add/cgi_portforwarding_del/cgi_portforwarding_modify/cgi_portforwarding_add_scan/cgi_dhcpd_lease/cgi_ddns/cgi_ip/cgi_dhcpd of the file /cgi-bin/network_mgr.cgi. The manipulation results in command injection. The attack may be launched remotely. The exploit is now public and may be used.","severity":{"version":"4.0","score":5.3,"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.04468,"percentile":0.91515,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-74","CWE-77"],"published":"2026-03-16T01:02:10Z","modified":"2026-06-17T10:56:10Z","products":[{"vendor":"d-link","product":"dnr-202l"},{"vendor":"d-link","product":"dnr-322l"},{"vendor":"d-link","product":"dnr-326"},{"vendor":"d-link","product":"dns-1100-4"},{"vendor":"d-link","product":"dns-120"},{"vendor":"d-link","product":"dns-1200-05"},{"vendor":"d-link","product":"dns-1550-04"},{"vendor":"d-link","product":"dns-315l"},{"vendor":"d-link","product":"dns-320"},{"vendor":"d-link","product":"dns-320l"},{"vendor":"d-link","product":"dns-320lw"},{"vendor":"d-link","product":"dns-321"},{"vendor":"d-link","product":"dns-323"},{"vendor":"d-link","product":"dns-325"},{"vendor":"d-link","product":"dns-326"},{"vendor":"d-link","product":"dns-327l"},{"vendor":"d-link","product":"dns-340l"},{"vendor":"d-link","product":"dns-343"},{"vendor":"d-link","product":"dns-345"},{"vendor":"d-link","product":"dns-726-4"},{"vendor":"dlink","product":"dnr-202l_firmware"},{"vendor":"dlink","product":"dnr-326_firmware"},{"vendor":"dlink","product":"dns-1100-4_firmware"},{"vendor":"dlink","product":"dns-1200-05_firmware"},{"vendor":"dlink","product":"dns-120_firmware"},{"vendor":"dlink","product":"dns-1550-04_firmware"},{"vendor":"dlink","product":"dns-315l_firmware"},{"vendor":"dlink","product":"dns-320_firmware"},{"vendor":"dlink","product":"dns-320l_firmware"},{"vendor":"dlink","product":"dns-320lw_firmware"},{"vendor":"dlink","product":"dns-321_firmware"},{"vendor":"dlink","product":"dns-322l_firmware"},{"vendor":"dlink","product":"dns-323_firmware"},{"vendor":"dlink","product":"dns-325_firmware"},{"vendor":"dlink","product":"dns-326_firmware"},{"vendor":"dlink","product":"dns-327l_firmware"},{"vendor":"dlink","product":"dns-340l_firmware"},{"vendor":"dlink","product":"dns-343_firmware"},{"vendor":"dlink","product":"dns-345_firmware"},{"vendor":"dlink","product":"dns-726-4_firmware"}],"references":[{"url":"https://vuldb.com/?id.351115","tags":["vdb-entry","technical-description","Third Party Advisory","VDB Entry"]},{"url":"https://vuldb.com/?ctiid.351115","tags":["signature","permissions-required","Permissions Required","VDB Entry"]},{"url":"https://vuldb.com/?submit.770401","tags":["third-party-advisory","Third Party Advisory","VDB Entry"]},{"url":"https://vuldb.com/?submit.770402","tags":["third-party-advisory","Third Party Advisory","VDB Entry"]},{"url":"https://vuldb.com/?submit.770403","tags":["third-party-advisory","Third Party Advisory","VDB Entry"]},{"url":"https://vuldb.com/?submit.770404","tags":["third-party-advisory","Third Party Advisory","VDB Entry"]},{"url":"https://vuldb.com/?submit.770405","tags":["third-party-advisory","Third Party Advisory","VDB Entry"]},{"url":"https://vuldb.com/?submit.770406","tags":["third-party-advisory","Third Party Advisory","VDB Entry"]},{"url":"https://vuldb.com/?submit.770407","tags":["third-party-advisory","Third Party Advisory","VDB Entry"]},{"url":"https://vuldb.com/?submit.770408","tags":["third-party-advisory","Third Party Advisory","VDB Entry"]},{"url":"https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_122/122.md","tags":["related","Exploit","Third Party Advisory"]},{"url":"https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_123/123.md","tags":["exploit","Exploit","Third Party Advisory"]},{"url":"https://www.dlink.com/","tags":["product","Product"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4203"},{"url":"https://www.dlink.com"},{"url":"https://github.com/advisories/GHSA-76q2-vqq4-gj3h"}],"sources":{"cve":[{"id":"CVE-2026-4203","title":"D-Link DNS-1550-04 network_mgr.cgi cgi_dhcpd command injection","description":"A vulnerability was detected 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. Impacted is the function cgi_portforwarding_add/cgi_portforwarding_del/cgi_portforwarding_modify/cgi_portforwarding_add_scan/cgi_dhcpd_lease/cgi_ddns/cgi_ip/cgi_dhcpd of the file /cgi-bin/network_mgr.cgi. The manipulation results in command injection. The attack may be launched remotely. The exploit is now public and may be used.","status":"published","published":"2026-03-16T01:02:10.99Z","modified":"2026-03-16T14:40:36.405Z","cvss":[{"version":"4.0","score":5.3,"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","level":"medium","assessor":"cna"},{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","level":"medium","assessor":"cna"},{"version":"3.0","score":6.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","level":"medium","assessor":"cna"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR","assessor":"cna"}],"cwes":["CWE-77","CWE-74"],"updated_at":"2026-11-02T14:19:59.369956Z"}],"euvd":[{"id":"EUVD-2026-12275","description":"A vulnerability was detected 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. Impacted is the function cgi_portforwarding_add/cgi_portforwarding_del/cgi_portforwarding_modify/cgi_portforwarding_add_scan/cgi_dhcpd_lease/cgi_ddns/cgi_ip/cgi_dhcpd of the file /cgi-bin/network_mgr.cgi. The manipulation results in command injection. The attack may be launched remotely. The exploit is now public and may be used.","status":"published","published":"2026-03-16T01:02:10Z","modified":"2026-03-16T14:40:36Z","cvss":[{"version":"4.0","score":5.3,"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","level":"medium"}],"updated_at":"2026-11-02T19:25:34.563327Z"}],"ghsa":[{"id":"GHSA-76q2-vqq4-gj3h","title":"A vulnerability was detected in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW,...","description":"A vulnerability was detected 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. Impacted is the function cgi_portforwarding_add/cgi_portforwarding_del/cgi_portforwarding_modify/cgi_portforwarding_add_scan/cgi_dhcpd_lease/cgi_ddns/cgi_ip/cgi_dhcpd of the file /cgi-bin/network_mgr.cgi. The manipulation results in command injection. The attack may be launched remotely. The exploit is now public and may be used.","status":"published","published":"2026-03-16T15:30:45Z","modified":"2026-03-19T15:32:14Z","cvss":[{"version":"4.0","score":2.1,"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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low"},{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-74","CWE-77"],"updated_at":"2026-11-02T15:06:42.889562Z"}],"nvd":[{"id":"CVE-2026-4203","description":"A vulnerability was detected 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. Impacted is the function cgi_portforwarding_add/cgi_portforwarding_del/cgi_portforwarding_modify/cgi_portforwarding_add_scan/cgi_dhcpd_lease/cgi_ddns/cgi_ip/cgi_dhcpd of the file /cgi-bin/network_mgr.cgi. The manipulation results in command injection. The attack may be launched remotely. The exploit is now public and may be used.","status":"published","published":"2026-03-16T14:20:05.323Z","modified":"2026-06-17T10:56:10.853Z","cvss":[{"version":"4.0","score":2.1,"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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low","assessor":"secondary"},{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"secondary"},{"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":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"secondary"}],"cwes":["CWE-74","CWE-77"],"updated_at":"2026-11-02T14:12:09.358914Z"}]}}