Medium severity6.3NVD Advisory· Published Mar 16, 2026· Updated Apr 29, 2026

CVE-2026-4204

Description

A flaw 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 affected element is the function cgi_myfavorite_add/cgi_myfavorite_set/cgi_myfavorite_del/cgi_myfavorite_set_sort_info/cgi_myfavorite_remove_apkg/cgi_myfavorite_compare_apkg/cgi_mycloud_auto_downlaod of the file /cgi-bin/gui_mgr.cgi. This manipulation of the argument f_user causes command injection. Remote exploitation of the attack is possible. The exploit has been published and may be used.

Affected products

Dlink/Dnr 202l Firmware
cpe:2.3:o:dlink:dnr-202l_firmware:*:*:*:*:*:*:*:*
Range: <=2026-02-05
Dlink/Dnr 326 Firmware
cpe:2.3:o:dlink:dnr-326_firmware:*:*:*:*:*:*:*:*
Range: <=2026-02-05
Dlink/Dns 1100 4 Firmware
cpe:2.3:o:dlink:dns-1100-4_firmware:*:*:*:*:*:*:*:*
Range: <=2026-02-05
Dlink/Dns 1200 05 Firmware
cpe:2.3:o:dlink:dns-1200-05_firmware:*:*:*:*:*:*:*:*
Range: <=2026-02-05
Dlink/Dns 120 Firmware
cpe:2.3:o:dlink:dns-120_firmware:*:*:*:*:*:*:*:*
Range: <=2026-02-05
Dlink/Dns 1550 04 Firmware
cpe:2.3:o:dlink:dns-1550-04_firmware:*:*:*:*:*:*:*:*
Range: <=2026-02-05
Dlink/Dns 315l Firmware
cpe:2.3:o:dlink:dns-315l_firmware:*:*:*:*:*:*:*:*
Range: <=2026-02-05
Dlink/Dns 320 Firmware
cpe:2.3:o:dlink:dns-320_firmware:*:*:*:*:*:*:*:*
Range: <=2026-02-05
Dlink/Dns 320l Firmware
cpe:2.3:o:dlink:dns-320l_firmware:*:*:*:*:*:*:*:*
Range: <=2026-02-05
Dlink/Dns 320lw Firmware
cpe:2.3:o:dlink:dns-320lw_firmware:*:*:*:*:*:*:*:*
Range: <=2026-02-05
Dlink/Dns 321 Firmware
cpe:2.3:o:dlink:dns-321_firmware:*:*:*:*:*:*:*:*
Range: <=2026-02-05
Dlink/Dns 322l Firmware
cpe:2.3:o:dlink:dns-322l_firmware:*:*:*:*:*:*:*:*
Range: <=2026-02-05
Dlink/Dns 323 Firmware
cpe:2.3:o:dlink:dns-323_firmware:*:*:*:*:*:*:*:*
Range: <=2026-02-05
Dlink/Dns 325 Firmware
cpe:2.3:o:dlink:dns-325_firmware:*:*:*:*:*:*:*:*
Range: <=2026-02-05
Dlink/Dns 326 Firmware
cpe:2.3:o:dlink:dns-326_firmware:*:*:*:*:*:*:*:*
Range: <=2026-02-05
Dlink/Dns 327l Firmware
cpe:2.3:o:dlink:dns-327l_firmware:*:*:*:*:*:*:*:*
Range: <=2026-02-05
Dlink/Dns 340l Firmware
cpe:2.3:o:dlink:dns-340l_firmware:*:*:*:*:*:*:*:*
Range: <=2026-02-05
Dlink/Dns 343 Firmware
cpe:2.3:o:dlink:dns-343_firmware:*:*:*:*:*:*:*:*
Range: <=2026-02-05
Dlink/Dns 345 Firmware
cpe:2.3:o:dlink:dns-345_firmware:*:*:*:*:*:*:*:*
Range: <=2026-02-05
Dlink/Dns 726 4 Firmware
cpe:2.3:o:dlink:dns-726-4_firmware:*:*:*:*:*:*:*:*
Range: <=2026-02-05

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_130/130.mdnvdExploitThird Party Advisory
vuldb.comnvdThird Party AdvisoryVDB Entry
vuldb.comnvdThird Party AdvisoryVDB Entry
vuldb.comnvdPermissions RequiredVDB Entry
www.dlink.comnvdProduct

News mentions

No linked articles in our index yet.

Severity

MediumCVSS v3.1

6.3/ 10

CVSS v42.1

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

Attack vector: Network
Complexity: Low
Privileges: Low
User interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: Low
Availability: Low

Vector

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

EPSS

Probability of exploitation in the next 30 days.

0.13%

VYPR risk score

Composite of severity, exploitation, and reach.

0.41medium

cvss	0.410
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000

Weaknesses

CWE-74
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-77
Improper Neutralization of Special Elements used in a Command ('Command Injection')

CVE ID

CVE-2026-4204

Credits

B(
Bond (VulDB User)
reporter