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.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
D-Link DNS-120 affected
Version Status Constraints
20260205 affected —
D-Link DNR-202L affected
Version Status Constraints
20260205 affected —
D-Link DNS-315L affected
Version Status Constraints
20260205 affected —
D-Link DNS-320 affected
Version Status Constraints
20260205 affected —
D-Link DNS-320L affected
Version Status Constraints
20260205 affected —
D-Link DNS-320LW affected
Version Status Constraints
20260205 affected —
D-Link DNS-321 affected
Version Status Constraints
20260205 affected —
D-Link DNR-322L affected
Version Status Constraints
20260205 affected —
D-Link DNS-323 affected
Version Status Constraints
20260205 affected —
D-Link DNS-325 affected
Version Status Constraints
20260205 affected —
D-Link DNS-326 affected
Version Status Constraints
20260205 affected —
D-Link DNS-327L affected
Version Status Constraints
20260205 affected —
D-Link DNR-326 affected
Version Status Constraints
20260205 affected —
D-Link DNS-340L affected
Version Status Constraints
20260205 affected —
D-Link DNS-343 affected
Version Status Constraints
20260205 affected —
D-Link DNS-345 affected
Version Status Constraints
20260205 affected —
D-Link DNS-726-4 affected
Version Status Constraints
20260205 affected —
D-Link DNS-1100-4 affected
Version Status Constraints
20260205 affected —
D-Link DNS-1200-05 affected
Version Status Constraints
20260205 affected —
D-Link DNS-1550-04 affected
Version Status Constraints
20260205 affected —

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_131/131.md cve-icon
https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_132/132.md cve-icon
https://vuldb.com/?ctiid.351117 cve-icon
https://vuldb.com/?id.351117 cve-icon
https://vuldb.com/?submit.770410 cve-icon
https://vuldb.com/?submit.770411 cve-icon
https://vuldb.com/?submit.770412 cve-icon
https://www.dlink.com/ cve-icon
History

Mon, 16 Mar 2026 01:45:00 +0000

Type Values Removed Values Added
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.
Title D-Link DNS-1550-04 app_mgr.cgi FTP_Server_BlockIP_Del command injection
Weaknesses CWE-74
CWE-77
References
Metrics cvssV2_0

{'score': 6.5, 'vector': 'AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 6.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 5.3, '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-03-16T01:32:09.418Z

Reserved: 2026-03-15T11:36:55.279Z

Link: CVE-2026-4205

cve-icon Vulnrichment

No data.

cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

No data.

Weaknesses