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CVE-2026-4203

MEDIUM CVSS: 6.3 Published: 2026-03-16 Modified: 2026-06-17

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.

Affected Platforms

Dlink Dns-322L FirmwareDlink Dns-1100-4 FirmwareDlink Dns-345Dlink Dns-120 FirmwareDlink Dns-320Lw FirmwareDlink Dns-1550-04Dlink Dns-327L FirmwareDlink Dns-343 FirmwareDlink Dns-323Dlink Dns-340L

Weakness Type

CWE-74, CWE-77, CWE-77

References