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Vulnerability record · CVE-2026-5312 · published 1 April 2026

CVE-2026-5312: Dlink dns-1550-04 firmware improper access control vulnerability

Dlink · Dns 1550 04 Firmware

A weakness has been 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 by this vulnerability is the function FMT_restart/Status_HDInfo/SMART_List/ScanDisk_info/ScanDisk/volume_status/Get_Volume_Mapping/FMT_check_disk_remount_state/FMT_rebuildinfo/FMT_result_list/FMT_result_list_phy/FMT_get_dminfo/FMT_manually_rebuild_info/Get_current_raidtype of the file /cgi-bin/dsk_mgr.cgi. Executing a manipulation can lead to improper access controls. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks.

5.5 CVSS 4.0 Medium EPSS 0.92% · top 40.6% CWE-266 · CWE-266CWE-284 · Improper access control
5.5CVSS 4.0 base score, v2 5.0
0.92%EPSS exploitation probability, 30 days
NoNot in CISA KEV
20Affected product versions listed by NVD
7References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

A weakness has been 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 by this vulnerability is the function FMT_restart/Status_HDInfo/SMART_List/ScanDisk_info/ScanDisk/volume_status/Get_Volume_Mapping/FMT_check_disk_remount_state/FMT_rebuildinfo/FMT_result_list/FMT_result_list_phy/FMT_get_dminfo/FMT_manually_rebuild_info/Get_current_raidtype of the file /cgi-bin/dsk_mgr.cgi. Executing a manipulation can lead to improper access controls. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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:

Affected products

20 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_172/172.md ExploitThird Party Advisory
https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_173/173.md ExploitThird Party Advisory
https://vuldb.com/submit/780442 Third Party AdvisoryVDB Entry
https://vuldb.com/submit/780443 Third Party AdvisoryVDB Entry
https://vuldb.com/vuln/354641 Third Party AdvisoryVDB Entry
https://vuldb.com/vuln/354641/cti Permissions RequiredVDB Entry
https://www.dlink.com/ Product

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-5312), CISA KEV, FIRST EPSS (scores of 2026-10-14). This page is refreshed as NVD updates the record.