CVE-2026-4205CWE-74CWE-77

D-Link DNS-1550-04 app_mgr.cgi FTP_Server_BlockIP_Del command injection

Medium · published March 16, 2026

CVSS v4.0
5.3
EPSS
5%
Percentile
92.5
In the wild
Unconfirmed
What it is

A vulnerability 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 impacted element is the function cgi_refresh_db/FTP_Server_BlockIP_Add/FTP_Server_BlockIP_Del of the file /cgi-bin/app_mgr.cgi. Such manipulation leads to command injection. The attack can be executed remotely. The exploit has been disclosed to the public and may be used.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.05286 · 92.5th percentile
Weaknesses
CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection'); CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')
Published
2026-03-16T01:32Z
EPSS history
Timeline
  • 16 MAR 01:32Z
    D-Link DNS-1550-04 app_mgr.cgi FTP_Server_BlockIP_Del command injection
    cvelistv5