Improper Access Control in D-Link dsk_mgr.cgi Allows Remote Exploit

Publication date: 2026-04-01

Last updated on: 2026-04-07

Assigner: VulDB

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 Scores

EPSS Scores

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Meta Information

Published

2026-04-01

Last Modified

2026-04-07

Generated

2026-07-06

AI Q&A

2026-04-02

EPSS Evaluated

2026-07-05

NVD

CVE-2026-5312

Affected Vendors & Products

Vendor	Product	Version / Range
dlink	dns-1550-04_firmware	to 2026-02-05 (inc)
dlink	dns-315l_firmware	to 2026-02-05 (inc)
dlink	dns-320_firmware	to 2026-02-05 (inc)
dlink	dns-320l_firmware	to 2026-02-05 (inc)
dlink	dns-320lw_firmware	to 2026-02-05 (inc)
dlink	dns-321_firmware	to 2026-02-05 (inc)
dlink	dns-322l_firmware	to 2026-02-05 (inc)
dlink	dns-323_firmware	to 2026-02-05 (inc)
dlink	dns-325_firmware	to 2026-02-05 (inc)
dlink	dns-326_firmware	to 2026-02-05 (inc)
dlink	dns-327l_firmware	to 2026-02-05 (inc)
dlink	dns-340l_firmware	to 2026-02-05 (inc)
dlink	dns-343_firmware	to 2026-02-05 (inc)
dlink	dns-345_firmware	to 2026-02-05 (inc)
dlink	dns-726-4_firmware	to 2026-02-05 (inc)
dlink	dnr-202l_firmware	to 2026-02-05 (inc)
dlink	dnr-326_firmware	to 2026-02-05 (inc)
dlink	dns-1100-4_firmware	to 2026-02-05 (inc)
dlink	dns-120_firmware	to 2026-02-05 (inc)
dlink	dns-1200-05_firmware	to 2026-02-05 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
CWE-266	A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.

Attack-Flow Graph

Executive Summary

This vulnerability affects multiple D-Link devices and involves a weakness in several functions within the file /cgi-bin/dsk_mgr.cgi. The issue allows for improper access controls to be bypassed through remote manipulation, potentially enabling unauthorized actions on the affected devices.

Impact Analysis

The vulnerability can be exploited remotely to bypass access controls, which may lead to unauthorized actions or disruptions on the affected D-Link devices. This could impact the availability or integrity of the device's functions.

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