CVE-2026-4205

MEDIUM

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

Title source: cna

Description

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.

References (8)

Core 8

Core References

View Writeup ZIP pw:eip

Vdb Entry, Technical Description vdb-entry technical-description

VDB-351117 | D-Link DNS-1550-04 app_mgr.cgi FTP_Server_BlockIP_Del command injection

https://vuldb.com/?id.351117

Signature, Permissions Required signature permissions-required

VDB-351117 | CTI Indicators (IOB, IOC, TTP, IOA)

https://vuldb.com/?ctiid.351117

Third Party Advisory third-party-advisory

Submit #770410 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Command Injection

https://vuldb.com/?submit.770410

Third Party Advisory third-party-advisory

Submit #770411 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Command Injection (Duplicate)

https://vuldb.com/?submit.770411

Third Party Advisory third-party-advisory

Submit #770412 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Command Injection (Duplicate)

https://vuldb.com/?submit.770412

Exploit exploit

https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_132/132.md

View Exploit ZIP pw:eip

Product product

https://www.dlink.com/

Scores

CVSS v3 6.3

EPSS 0.0350

EPSS Percentile 87.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact total

Details

CWE

CWE-74 CWE-77

Status published

Products (40)

D-Link/DNR-202L 20260205

D-Link/DNR-322L 20260205

D-Link/DNR-326 20260205

D-Link/DNS-1100-4 20260205

D-Link/DNS-120 20260205

D-Link/DNS-1200-05 20260205

D-Link/DNS-1550-04 20260205

D-Link/DNS-315L 20260205

D-Link/DNS-320 20260205

D-Link/DNS-320L 20260205

... and 30 more

Published Mar 16, 2026

Tracked Since Mar 16, 2026