CVE-2026-4203

moderate-risk
Published 2026-03-16

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.

Do I need to act?

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0.08% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.3/10 Medium
NETWORK / LOW complexity

Affected Products (20)

Affected Vendors

Dlink

References (13)

Exploit https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_122/122.md
Exploit https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_123/123.md
Permissions Required https://vuldb.com/?ctiid.351115
Third Party Advisory https://vuldb.com/?id.351115
Third Party Advisory https://vuldb.com/?submit.770401
Third Party Advisory https://vuldb.com/?submit.770402
Third Party Advisory https://vuldb.com/?submit.770403
Third Party Advisory https://vuldb.com/?submit.770404
Third Party Advisory https://vuldb.com/?submit.770405
Third Party Advisory https://vuldb.com/?submit.770406
Third Party Advisory https://vuldb.com/?submit.770407
Third Party Advisory https://vuldb.com/?submit.770408
Product https://www.dlink.com/
43
/ 100
moderate-risk
Severity 23/34 · High
Exploitability 0/34 · Minimal
Exposure 20/34 · Moderate