Vulnerability Details CVE-2026-4203
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 64.9%
CVSS Severity
CVSS v3 Score 6.3
CVSS v2 Score 6.5
References
- https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_122/122.md
- https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_123/123.md
- https://vuldb.com/?ctiid.351115
- https://vuldb.com/?id.351115
- https://vuldb.com/?submit.770401
- https://vuldb.com/?submit.770402
- https://vuldb.com/?submit.770403
- https://vuldb.com/?submit.770404
- https://vuldb.com/?submit.770405
- https://vuldb.com/?submit.770406
- https://vuldb.com/?submit.770407
- https://vuldb.com/?submit.770408
- https://www.dlink.com/
Products affected by CVE-2026-4203
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cpe:2.3:h:dlink:dnr-202l:-
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cpe:2.3:h:dlink:dnr-326:-
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cpe:2.3:h:dlink:dns-1100-4:-
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cpe:2.3:h:dlink:dns-1200-05:-
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cpe:2.3:h:dlink:dns-120:-
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cpe:2.3:h:dlink:dns-1550-04:-
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cpe:2.3:h:dlink:dns-315l:-
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cpe:2.3:h:dlink:dns-320:-
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cpe:2.3:h:dlink:dns-320l:-
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cpe:2.3:h:dlink:dns-320lw:-
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cpe:2.3:h:dlink:dns-321:-
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cpe:2.3:h:dlink:dns-322l:-
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cpe:2.3:h:dlink:dns-323:-
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cpe:2.3:h:dlink:dns-325:-
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cpe:2.3:h:dlink:dns-326:-
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cpe:2.3:h:dlink:dns-327l:-
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cpe:2.3:h:dlink:dns-340l:-
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cpe:2.3:h:dlink:dns-343:-
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cpe:2.3:h:dlink:dns-345:-
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cpe:2.3:h:dlink:dns-726-4:-
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cpe:2.3:o:dlink:dnr-202l_firmware:-
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cpe:2.3:o:dlink:dnr-326_firmware:-
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cpe:2.3:o:dlink:dnr-326_firmware:1.40b03
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cpe:2.3:o:dlink:dns-1100-4_firmware:-
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cpe:2.3:o:dlink:dns-1200-05_firmware:-
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cpe:2.3:o:dlink:dns-120_firmware:-
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cpe:2.3:o:dlink:dns-1550-04_firmware:-
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cpe:2.3:o:dlink:dns-315l_firmware:-
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cpe:2.3:o:dlink:dns-320_firmware:-
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cpe:2.3:o:dlink:dns-320_firmware:2.00
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cpe:2.3:o:dlink:dns-320_firmware:2.02
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cpe:2.3:o:dlink:dns-320_firmware:2.02b01
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cpe:2.3:o:dlink:dns-320_firmware:2.03
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cpe:2.3:o:dlink:dns-320_firmware:2.05
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cpe:2.3:o:dlink:dns-320_firmware:2.05.b10
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cpe:2.3:o:dlink:dns-320_firmware:2.06b01
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cpe:2.3:o:dlink:dns-320l_firmware:-
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cpe:2.3:o:dlink:dns-320l_firmware:1.01.0702.2013
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cpe:2.3:o:dlink:dns-320l_firmware:1.03.0904.2013
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cpe:2.3:o:dlink:dns-320l_firmware:1.03b04
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cpe:2.3:o:dlink:dns-320l_firmware:1.11
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cpe:2.3:o:dlink:dns-320lw_firmware:-
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cpe:2.3:o:dlink:dns-320lw_firmware:1.03b04
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cpe:2.3:o:dlink:dns-321_firmware:-
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cpe:2.3:o:dlink:dns-322l_firmware:2.00b07
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cpe:2.3:o:dlink:dns-323_firmware:-
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cpe:2.3:o:dlink:dns-325_firmware:-
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cpe:2.3:o:dlink:dns-325_firmware:1.01
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cpe:2.3:o:dlink:dns-325_firmware:1.05b03
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cpe:2.3:o:dlink:dns-326_firmware:-
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cpe:2.3:o:dlink:dns-327l_firmware:-
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cpe:2.3:o:dlink:dns-327l_firmware:1.00.0409.2013
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cpe:2.3:o:dlink:dns-327l_firmware:1.02
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cpe:2.3:o:dlink:dns-327l_firmware:1.09
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cpe:2.3:o:dlink:dns-340l_firmware:-
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cpe:2.3:o:dlink:dns-340l_firmware:1.08
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cpe:2.3:o:dlink:dns-343_firmware:-
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cpe:2.3:o:dlink:dns-343_firmware:1.0.5
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cpe:2.3:o:dlink:dns-345_firmware:-
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cpe:2.3:o:dlink:dns-345_firmware:1.03b06
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cpe:2.3:o:dlink:dns-726-4_firmware:-