PT-2026-25584 · D Link · Dnr-202L+38

Bond

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Published

2026-03-16

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Updated

2026-03-16

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CVE-2026-4204

CVSS v3.1

9.8

Critical

VectorAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions D-Link DNS-120 D-Link DNR-202L D-Link DNS-315L D-Link DNS-320 D-Link DNS-320L D-Link DNS-320LW D-Link DNS-321 D-Link DNR-322L D-Link DNS-323 D-Link DNS-325 D-Link DNS-326 D-Link DNS-327L D-Link DNR-326 D-Link DNS-340L D-Link DNS-343 D-Link DNS-345 D-Link DNS-726-4 D-Link DNS-1100-4 D-Link DNS-1200-05 D-Link DNS-1550-04 versions prior to 20260205
Description A flaw exists in several D-Link devices related to command injection. The issue stems from manipulating the f user argument within the 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 functions located in the /cgi-bin/gui mgr.cgi file. This allows for remote exploitation. An exploit for this issue has been published.
Recommendations D-Link DNS-120: At the moment, there is no information about a newer version that contains a fix for this vulnerability. D-Link DNR-202L: At the moment, there is no information about a newer version that contains a fix for this vulnerability. D-Link DNS-315L: At the moment, there is no information about a newer version that contains a fix for this vulnerability. D-Link DNS-320: At the moment, there is no information about a newer version that contains a fix for this vulnerability. D-Link DNS-320L: At the moment, there is no information about a newer version that contains a fix for this vulnerability. D-Link DNS-320LW: At the moment, there is no information about a newer version that contains a fix for this vulnerability. D-Link DNS-321: At the moment, there is no information about a newer version that contains a fix for this vulnerability. D-Link DNR-322L: At the moment, there is no information about a newer version that contains a fix for this vulnerability. D-Link DNS-323: At the moment, there is no information about a newer version that contains a fix for this vulnerability. D-Link DNS-325: At the moment, there is no information about a newer version that contains a fix for this vulnerability. D-Link DNS-326: At the moment, there is no information about a newer version that contains a fix for this vulnerability. D-Link DNS-327L: At the moment, there is no information about a newer version that contains a fix for this vulnerability. D-Link DNR-326: At the moment, there is no information about a newer version that contains a fix for this vulnerability. D-Link DNS-340L: At the moment, there is no information about a newer version that contains a fix for this vulnerability. D-Link DNS-343: At the moment, there is no information about a newer version that contains a fix for this vulnerability. D-Link DNS-345: At the moment, there is no information about a newer version that contains a fix for this vulnerability. D-Link DNS-726-4: At the moment, there is no information about a newer version that contains a fix for this vulnerability. D-Link DNS-1100-4: At the moment, there is no information about a newer version that contains a fix for this vulnerability. D-Link DNS-1200-05: At the moment, there is no information about a newer version that contains a fix for this vulnerability. D-Link DNS-1550-04: Update to a version after 20260205.

Exploit

Command Injection

Special Elements Injection

Weakness Enumeration

CWE-77CWE-74

Related Identifiers

CVE-2026-4204

Affected Products

Dnr-202L
Dnr-322L
Dnr-326
Dns-1100-4
Dns-120
Dns-1200-05
Dns-1550-04
Dns-315L
Dns-320
Dns-320L
Dns-321
Dns-323
Dns-325
Dns-326
Dns-327L
Dns-340L
Dns-343
Dns-345
Dns-726-4
Dnr-202L Firmware
Dnr-326 Firmware
Dns-1100-4 Firmware
Dns-1200-05 Firmware
Dns-120 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