CVE-2026-4206
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Remote Command Injection in D-Link dsk_mgr.cgi Component

Publication date: 2026-03-16

Last updated on: 2026-04-29

Assigner: VulDB

Description
A vulnerability was 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. This affects the function FMT_rebuild_diskmgr/FMT_create_diskmgr/ScanDisk_run_e2fsck of the file /cgi-bin/dsk_mgr.cgi. Performing a manipulation results in command injection. The attack is possible to be carried out remotely. The exploit has been made public and could be used.
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Meta Information
Published
2026-03-16
Last Modified
2026-04-29
Generated
2026-06-16
AI Q&A
2026-03-16
EPSS Evaluated
2026-06-14
NVD
CVE-2026-4206
EUVD
EUVD-2026-12282
Affected Vendors & Products
Showing 20 associated CPEs
Vendor Product Version / Range
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)
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)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-77 The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
CWE-74 The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
Attack-Flow Graph
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Executive Summary

This vulnerability affects multiple D-Link devices including DNS-120, DNR-202L, DNS-315L, DNS-320 series, 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 version 20260205.

It is related to the functions FMT_rebuild_diskmgr, FMT_create_diskmgr, and ScanDisk_run_e2fsck in the file /cgi-bin/dsk_mgr.cgi.

By manipulating these functions, an attacker can perform command injection remotely, meaning they can execute arbitrary commands on the affected device.

The exploit for this vulnerability has been made public.

Impact Analysis

This vulnerability allows remote attackers to inject and execute arbitrary commands on affected D-Link devices.

Successful exploitation could lead to unauthorized control over the device, potentially allowing attackers to disrupt device functionality, access sensitive data, or use the device as a foothold for further network attacks.

Compliance Impact

I don't know

Detection Guidance

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Mitigation Strategies

I don't know

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