by Kastro CVE-2026-4203
D-Link DNS-120 — D-Link DNS-1550-04 network_mgr.cgi cgi_dhcpd command injection
Description · from the CVE record
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.
Affected
ProductAffectedFixed inSource
DNS-12020260205–CNA
DNR-202L20260205–CNA
DNS-315L20260205–CNA
DNS-32020260205–CNA
DNS-320L20260205–CNA
DNS-320LW20260205–CNA
DNS-32120260205–CNA
DNR-322L20260205–CNA
DNS-32320260205–CNA
DNS-32520260205–CNA
DNS-32620260205–CNA
DNS-327L20260205–CNA
Scores by source
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
VulDB (CNA)6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
VulDB (CNA)6.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
VulDB (CNA)5.3CVSS: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
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total