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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.

PUBLISHED Reserved 2026-03-15 | Published 2026-03-16 | Updated 2026-03-16 | Assigner VulDB




MEDIUM: 5.3CVSS: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
MEDIUM: 6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
MEDIUM: 6.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
6.5AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

Command Injection

Injection

Product status

20260205
affected

20260205
affected

20260205
affected

20260205
affected

20260205
affected

20260205
affected

20260205
affected

20260205
affected

20260205
affected

20260205
affected

20260205
affected

20260205
affected

20260205
affected

20260205
affected

20260205
affected

20260205
affected

20260205
affected

20260205
affected

20260205
affected

20260205
affected

Timeline

2026-03-15:Advisory disclosed
2026-03-15:VulDB entry created
2026-03-15:VulDB entry last update

Credits

Bond (VulDB User) reporter

References

vuldb.com/?id.351117 (VDB-351117 | D-Link DNS-1550-04 app_mgr.cgi FTP_Server_BlockIP_Del command injection) vdb-entry technical-description

vuldb.com/?ctiid.351117 (VDB-351117 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/?submit.770410 (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) third-party-advisory

vuldb.com/?submit.770411 (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)) third-party-advisory

vuldb.com/?submit.770412 (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)) third-party-advisory

github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_131/131.md related

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

www.dlink.com/ product

cve.org (CVE-2026-4205)

nvd.nist.gov (CVE-2026-4205)

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