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CVE-2026-4209 Details

Description

A vulnerability was identified 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. Affected is the function cgi_create_import_users/cgi_user_batch_create/cgi_user_set_quota/cgi_user_del/cgi_user_modify/cgi_group_set_quota/cgi_group_modify/cgi_group_add/cgi_user_add/cgi_get_modify_group_info/cgi_chg_admin_pw of the file /cgi-bin/account_mgr.cgi. The manipulation leads to command injection. It is possible to initiate the attack remotely. The exploit is publicly available and might be used.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CNA: [email protected]CVSS-B:6.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_148/148.md	[email protected]	ExploitThird Party Advisory
https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_149/149.md	[email protected]	ExploitThird Party Advisory
https://vuldb.com/?ctiid.351120	[email protected]	Permissions RequiredVDB Entry
https://vuldb.com/?id.351120	[email protected]	Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.770429	[email protected]	Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.770430	[email protected]	Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.770431	[email protected]	Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.770432	[email protected]	Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.770433	[email protected]	Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.770434	[email protected]	Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.770435	[email protected]	Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.770436	[email protected]	Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.770437	[email protected]	Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.770438	[email protected]	Third Party AdvisoryVDB Entry
https://www.dlink.com/	[email protected]	Product

see all 15 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-77	Improper Neutralization of Special Elements used in a Command ('Command Injection')	[email protected]
CWE-74	Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')	[email protected]
CWE-77	Improper Neutralization of Special Elements used in a Command ('Command Injection')	[email protected]

Affected Products

Product	Versions
dlink dnr-202l firmware	<= 2026-02-05
CPE cpe:2.3:o:dlink:dnr-202l_firmware:::::::: Remediation No remediation found in references.
dlink dnr-202l	All versions
CPE cpe:2.3:h:dlink:dnr-202l:-:::::::* Remediation No remediation found in references.
dlink dnr-326 firmware	<= 2026-02-05
CPE cpe:2.3:o:dlink:dnr-326_firmware:::::::: Remediation No remediation found in references.
dlink dnr-326	All versions
CPE cpe:2.3:h:dlink:dnr-326:-:::::::* Remediation No remediation found in references.
dlink dns-1100-4 firmware	<= 2026-02-05
CPE cpe:2.3:o:dlink:dns-1100-4_firmware:::::::: Remediation No remediation found in references.
dlink dns-1100-4	All versions
CPE cpe:2.3:h:dlink:dns-1100-4:-:::::::* Remediation No remediation found in references.
dlink dns-120 firmware	<= 2026-02-05
CPE cpe:2.3:o:dlink:dns-120_firmware:::::::: Remediation No remediation found in references.
dlink dns-120	All versions
CPE cpe:2.3:h:dlink:dns-120:-:::::::* Remediation No remediation found in references.
dlink dns-1200-05 firmware	<= 2026-02-05
CPE cpe:2.3:o:dlink:dns-1200-05_firmware:::::::: Remediation No remediation found in references.
dlink dns-1200-05	All versions
CPE cpe:2.3:h:dlink:dns-1200-05:-:::::::* Remediation No remediation found in references.
dlink dns-1550-04 firmware	<= 2026-02-05
CPE cpe:2.3:o:dlink:dns-1550-04_firmware:::::::: Remediation No remediation found in references.
dlink dns-1550-04	All versions
CPE cpe:2.3:h:dlink:dns-1550-04:-:::::::* Remediation No remediation found in references.
dlink dns-315l firmware	<= 2026-02-05
CPE cpe:2.3:o:dlink:dns-315l_firmware:::::::: Remediation No remediation found in references.
dlink dns-315l	All versions
CPE cpe:2.3:h:dlink:dns-315l:-:::::::* Remediation No remediation found in references.
dlink dns-320 firmware	<= 2026-02-05
CPE cpe:2.3:o:dlink:dns-320_firmware:::::::: Remediation No remediation found in references.
dlink dns-320	All versions
CPE cpe:2.3:h:dlink:dns-320:-:::::::* Remediation No remediation found in references.
dlink dns-320l firmware	<= 2026-02-05
CPE cpe:2.3:o:dlink:dns-320l_firmware:::::::: Remediation No remediation found in references.
dlink dns-320l	All versions
CPE cpe:2.3:h:dlink:dns-320l:-:::::::* Remediation No remediation found in references.
dlink dns-320lw firmware	<= 2026-02-05
CPE cpe:2.3:o:dlink:dns-320lw_firmware:::::::: Remediation No remediation found in references.
dlink dns-320lw	All versions
CPE cpe:2.3:h:dlink:dns-320lw:-:::::::* Remediation No remediation found in references.
dlink dns-321 firmware	<= 2026-02-05
CPE cpe:2.3:o:dlink:dns-321_firmware:::::::: Remediation No remediation found in references.
dlink dns-321	All versions
CPE cpe:2.3:h:dlink:dns-321:-:::::::* Remediation No remediation found in references.
dlink dns-322l firmware	<= 2026-02-05
CPE cpe:2.3:o:dlink:dns-322l_firmware:::::::: Remediation No remediation found in references.
dlink dns-322l	All versions
CPE cpe:2.3:h:dlink:dns-322l:-:::::::* Remediation No remediation found in references.
dlink dns-323 firmware	<= 2026-02-05
CPE cpe:2.3:o:dlink:dns-323_firmware:::::::: Remediation No remediation found in references.
dlink dns-323	All versions
CPE cpe:2.3:h:dlink:dns-323:-:::::::* Remediation No remediation found in references.
dlink dns-325 firmware	<= 2026-02-05
CPE cpe:2.3:o:dlink:dns-325_firmware:::::::: Remediation No remediation found in references.
dlink dns-325	All versions
CPE cpe:2.3:h:dlink:dns-325:-:::::::* Remediation No remediation found in references.
dlink dns-326 firmware	<= 2026-02-05
CPE cpe:2.3:o:dlink:dns-326_firmware:::::::: Remediation No remediation found in references.
dlink dns-326	All versions
CPE cpe:2.3:h:dlink:dns-326:-:::::::* Remediation No remediation found in references.
dlink dns-327l firmware	<= 2026-02-05
CPE cpe:2.3:o:dlink:dns-327l_firmware:::::::: Remediation No remediation found in references.
dlink dns-327l	All versions
CPE cpe:2.3:h:dlink:dns-327l:-:::::::* Remediation No remediation found in references.
dlink dns-340l firmware	<= 2026-02-05
CPE cpe:2.3:o:dlink:dns-340l_firmware:::::::: Remediation No remediation found in references.
dlink dns-340l	All versions
CPE cpe:2.3:h:dlink:dns-340l:-:::::::* Remediation No remediation found in references.
dlink dns-343 firmware	<= 2026-02-05
CPE cpe:2.3:o:dlink:dns-343_firmware:::::::: Remediation No remediation found in references.
dlink dns-343	All versions
CPE cpe:2.3:h:dlink:dns-343:-:::::::* Remediation No remediation found in references.
dlink dns-345 firmware	<= 2026-02-05
CPE cpe:2.3:o:dlink:dns-345_firmware:::::::: Remediation No remediation found in references.
dlink dns-345	All versions
CPE cpe:2.3:h:dlink:dns-345:-:::::::* Remediation No remediation found in references.
dlink dns-726-4 firmware	<= 2026-02-05
CPE cpe:2.3:o:dlink:dns-726-4_firmware:::::::: Remediation No remediation found in references.
dlink dns-726-4	All versions
CPE cpe:2.3:h:dlink:dns-726-4:-:::::::* Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Apr 29, 2026	Data Remediation	[email protected]
Mar 19, 2026	Initial Analysis	[email protected]
Mar 16, 2026	New CVE Received	[email protected]

CVE-2026-4209 Details

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