CVE-2026-4204

moderate-risk

Published 2026-03-16

A flaw has been found 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. The affected element is the function cgi_myfavorite_add/cgi_myfavorite_set/cgi_myfavorite_del/cgi_myfavorite_set_sort_info/cgi_myfavorite_remove_apkg/cgi_myfavorite_compare_apkg/cgi_mycloud_auto_downlaod of the file /cgi-bin/gui_mgr.cgi. This manipulation of the argument f_user causes command injection. Remote exploitation of the attack is possible. The exploit has been published and may be used.

Do I need to act?

0.10% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 6.3/10 Medium

NETWORK / LOW complexity

Affected Products (20)

Dnr-202L Firmware

Dnr-326 Firmware

Dns-1100-4 Firmware

Dns-120 Firmware

Dns-1200-05 Firmware

Dns-1550-04 Firmware

Dns-315L Firmware

Dns-320 Firmware

Dns-320L Firmware

Dns-320Lw Firmware

Dns-321 Firmware

Dns-322L Firmware

Dns-323 Firmware

Dns-325 Firmware

Dns-326 Firmware

Dns-327L Firmware

Dns-340L Firmware

Dns-343 Firmware

Dns-345 Firmware

Dns-726-4 Firmware

Affected Vendors

Dlink

References (5)

Exploit https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_130/130.md

Permissions Required https://vuldb.com/?ctiid.351116

Third Party Advisory https://vuldb.com/?id.351116

Third Party Advisory https://vuldb.com/?submit.770409

Product https://www.dlink.com/

/ 100

moderate-risk

Severity 23/34 · High

Exploitability 0/34 · Minimal

Exposure 20/34 · Moderate