CVE-2026-4203

MEDIUM

D-Link DNS-1550-04 network_mgr.cgi cgi_dhcpd command injection

Title source: cna
STIX 2.1

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.

References (13)

Core 13
Core References
Product product
https://www.dlink.com/
Vdb Entry, Technical Description vdb-entry technical-description
VDB-351115 | D-Link DNS-1550-04 network_mgr.cgi cgi_dhcpd command injection
https://vuldb.com/?id.351115
Signature, Permissions Required signature permissions-required
VDB-351115 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/?ctiid.351115
Third Party Advisory third-party-advisory
Submit #770401 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Command Injection
https://vuldb.com/?submit.770401
Third Party Advisory third-party-advisory
Submit #770402 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Command Injection (Duplicate)
https://vuldb.com/?submit.770402
Third Party Advisory third-party-advisory
Submit #770403 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Command Injection (Duplicate)
https://vuldb.com/?submit.770403
Third Party Advisory third-party-advisory
Submit #770404 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 command (Duplicate)
https://vuldb.com/?submit.770404
Third Party Advisory third-party-advisory
Submit #770405 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Command Injection (Duplicate)
https://vuldb.com/?submit.770405
Third Party Advisory third-party-advisory
Submit #770406 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Command Injection (Duplicate)
https://vuldb.com/?submit.770406
Third Party Advisory third-party-advisory
Submit #770407 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Command Injection (Duplicate)
https://vuldb.com/?submit.770407
Third Party Advisory third-party-advisory
Submit #770408 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Command Injection (Duplicate)
https://vuldb.com/?submit.770408

Scores

CVSS v3 6.3
EPSS 0.0383
EPSS Percentile 88.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-74 CWE-77
Status published
Products (40)
D-Link/DNR-202L 20260205
D-Link/DNR-322L 20260205
D-Link/DNR-326 20260205
D-Link/DNS-1100-4 20260205
D-Link/DNS-120 20260205
D-Link/DNS-1200-05 20260205
D-Link/DNS-1550-04 20260205
D-Link/DNS-315L 20260205
D-Link/DNS-320 20260205
D-Link/DNS-320L 20260205
... and 30 more
Published Mar 16, 2026
Tracked Since Mar 16, 2026