D-Link DNS-1550-04 account_mgr.cgi cgi_chg_admin_pw command injection

Summary

CVE	CVE-2026-4209
State	PUBLISHED
Assigner	VulDB
Source Priority	CVE Program / NVD first with legacy fallback
Published	2026-03-16 14:20:06 UTC
Updated	2026-04-29 01:00:01 UTC
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.

Risk And Classification

Primary CVSS: v4.0 2.1 LOW from [email protected]

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-74 | CWE-77 | CWE-77 Command Injection | CWE-74 Injection

Version	Source	Type	Score	Severity	Vector
4.0	[email protected]	Secondary	2.1	LOW	`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/C...`
4.0	CNA	DECLARED	5.3	MEDIUM	`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`
3.1	[email protected]	Primary	9.8	CRITICAL	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
3.1	[email protected]	Secondary	6.3	MEDIUM	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L`
3.1	CNA	DECLARED	6.3	MEDIUM	`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`
3.0	CNA	DECLARED	6.3	MEDIUM	`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`
2.0	[email protected]	Secondary	6.5		`AV:N/AC:L/Au:S/C:P/I:P/A:P`
2.0	CNA	DECLARED	6.5		`AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR`

CVSS v4.0 Breakdown

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

None

Privileges Required

Low

User Interaction

None

Confidentiality

Low

Integrity

Low

Availability

Low

Sub Conf.

None

Sub Integrity

None

Sub Availability

None

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

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

CVSS v3.0 Breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

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

NVD Known Affected Configurations (CPE 2.3)

Type	Vendor	Product	Version	Update	Edition	Language
Hardware	Dlink	Dnr-202l	-	All	All	All
Operating System	Dlink	Dnr-202l Firmware	All	All	All	All
Hardware	Dlink	Dnr-326	-	All	All	All
Operating System	Dlink	Dnr-326 Firmware	All	All	All	All
Hardware	Dlink	Dns-1100-4	-	All	All	All
Operating System	Dlink	Dns-1100-4 Firmware	All	All	All	All
Hardware	Dlink	Dns-120	-	All	All	All
Hardware	Dlink	Dns-1200-05	-	All	All	All
Operating System	Dlink	Dns-1200-05 Firmware	All	All	All	All
Operating System	Dlink	Dns-120 Firmware	All	All	All	All
Hardware	Dlink	Dns-1550-04	-	All	All	All
Operating System	Dlink	Dns-1550-04 Firmware	All	All	All	All
Hardware	Dlink	Dns-315l	-	All	All	All
Operating System	Dlink	Dns-315l Firmware	All	All	All	All
Hardware	Dlink	Dns-320	-	All	All	All
Hardware	Dlink	Dns-320l	-	All	All	All
Hardware	Dlink	Dns-320lw	-	All	All	All
Operating System	Dlink	Dns-320lw Firmware	All	All	All	All
Operating System	Dlink	Dns-320l Firmware	All	All	All	All
Operating System	Dlink	Dns-320 Firmware	All	All	All	All
Hardware	Dlink	Dns-321	-	All	All	All
Operating System	Dlink	Dns-321 Firmware	All	All	All	All
Hardware	Dlink	Dns-322l	-	All	All	All
Operating System	Dlink	Dns-322l Firmware	All	All	All	All
Hardware	Dlink	Dns-323	-	All	All	All
Operating System	Dlink	Dns-323 Firmware	All	All	All	All
Hardware	Dlink	Dns-325	-	All	All	All
Operating System	Dlink	Dns-325 Firmware	All	All	All	All
Hardware	Dlink	Dns-326	-	All	All	All
Operating System	Dlink	Dns-326 Firmware	All	All	All	All
Hardware	Dlink	Dns-327l	-	All	All	All
Operating System	Dlink	Dns-327l Firmware	All	All	All	All
Hardware	Dlink	Dns-340l	-	All	All	All
Operating System	Dlink	Dns-340l Firmware	All	All	All	All
Hardware	Dlink	Dns-343	-	All	All	All
Operating System	Dlink	Dns-343 Firmware	All	All	All	All
Hardware	Dlink	Dns-345	-	All	All	All
Operating System	Dlink	Dns-345 Firmware	All	All	All	All
Hardware	Dlink	Dns-726-4	-	All	All	All
Operating System	Dlink	Dns-726-4 Firmware	All	All	All	All

Vendor Declared Affected Products

Source	Vendor	Product	Version	Platforms
CNA	D-Link	DNS-120	affected 20260205	Not specified
CNA	D-Link	DNR-202L	affected 20260205	Not specified
CNA	D-Link	DNS-315L	affected 20260205	Not specified
CNA	D-Link	DNS-320	affected 20260205	Not specified
CNA	D-Link	DNS-320L	affected 20260205	Not specified
CNA	D-Link	DNS-320LW	affected 20260205	Not specified
CNA	D-Link	DNS-321	affected 20260205	Not specified
CNA	D-Link	DNR-322L	affected 20260205	Not specified
CNA	D-Link	DNS-323	affected 20260205	Not specified
CNA	D-Link	DNS-325	affected 20260205	Not specified
CNA	D-Link	DNS-326	affected 20260205	Not specified
CNA	D-Link	DNS-327L	affected 20260205	Not specified
CNA	D-Link	DNR-326	affected 20260205	Not specified
CNA	D-Link	DNS-340L	affected 20260205	Not specified
CNA	D-Link	DNS-343	affected 20260205	Not specified
CNA	D-Link	DNS-345	affected 20260205	Not specified
CNA	D-Link	DNS-726-4	affected 20260205	Not specified
CNA	D-Link	DNS-1100-4	affected 20260205	Not specified
CNA	D-Link	DNS-1200-05	affected 20260205	Not specified
CNA	D-Link	DNS-1550-04	affected 20260205	Not specified

References

Reference	Source	Link	Tags
vuldb.com	[email protected]	vuldb.com	Third Party Advisory, VDB Entry
vuldb.com	[email protected]	vuldb.com	Third Party Advisory, VDB Entry
vuldb.com	[email protected]	vuldb.com	Third Party Advisory, VDB Entry
vuldb.com	[email protected]	vuldb.com	Third Party Advisory, VDB Entry
github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_149/149.md	[email protected]	github.com	Exploit, Third Party Advisory
vuldb.com	[email protected]	vuldb.com	Third Party Advisory, VDB Entry
github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_148/148.md	[email protected]	github.com	Exploit, Third Party Advisory
vuldb.com	[email protected]	vuldb.com	Permissions Required, VDB Entry
vuldb.com	[email protected]	vuldb.com	Third Party Advisory, VDB Entry
vuldb.com	[email protected]	vuldb.com	Third Party Advisory, VDB Entry
www.dlink.com	[email protected]	www.dlink.com	Product
vuldb.com	[email protected]	vuldb.com	Third Party Advisory, VDB Entry
vuldb.com	[email protected]	vuldb.com	Third Party Advisory, VDB Entry
vuldb.com	[email protected]	vuldb.com	Third Party Advisory, VDB Entry
vuldb.com	[email protected]	vuldb.com	Third Party Advisory, VDB Entry
CVE Program record	CVE.ORG	www.cve.org	canonical
NVD vulnerability detail	NVD	nvd.nist.gov	canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: pjqwudi (VulDB User) (en)

Additional Advisory Data

Source	Time	Event
CNA	2026-03-15T00:00:00.000Z	Advisory disclosed
CNA	2026-03-15T01:00:00.000Z	VulDB entry created
CNA	2026-03-15T13:01:06.000Z	VulDB entry last update

There are currently no legacy QID mappings associated with this CVE.