D Link · Dnr-202L · CVE-2026-4205
**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 command injection issue exists in several D-Link devices. The affected element is the `cgi refresh db`/`FTP Server BlockIP Add`/`FTP Server BlockIP Del` function within the `/cgi-bin/app mgr.cgi` file. Manipulation of this function can lead to command injection, and the attack can be executed remotely. The exploit for this issue has been publicly disclosed.
**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 later than 20260205.