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 issue is the function Local_Backup_Info of the file /cgi-bin/local_backup_mgr.cgi. This manipulation of the argument f_idx causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Complete

Integrity Impact Complete

Availability Impact Complete

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
D-Link DNS-120 affected
Version Status Constraints
20260205 affected —
D-Link DNR-202L affected
Version Status Constraints
20260205 affected —
D-Link DNS-315L affected
Version Status Constraints
20260205 affected —
D-Link DNS-320 affected
Version Status Constraints
20260205 affected —
D-Link DNS-320L affected
Version Status Constraints
20260205 affected —
D-Link DNS-320LW affected
Version Status Constraints
20260205 affected —
D-Link DNS-321 affected
Version Status Constraints
20260205 affected —
D-Link DNR-322L affected
Version Status Constraints
20260205 affected —
D-Link DNS-323 affected
Version Status Constraints
20260205 affected —
D-Link DNS-325 affected
Version Status Constraints
20260205 affected —
D-Link DNS-326 affected
Version Status Constraints
20260205 affected —
D-Link DNS-327L affected
Version Status Constraints
20260205 affected —
D-Link DNR-326 affected
Version Status Constraints
20260205 affected —
D-Link DNS-340L affected
Version Status Constraints
20260205 affected —
D-Link DNS-343 affected
Version Status Constraints
20260205 affected —
D-Link DNS-345 affected
Version Status Constraints
20260205 affected —
D-Link DNS-726-4 affected
Version Status Constraints
20260205 affected —
D-Link DNS-1100-4 affected
Version Status Constraints
20260205 affected —
D-Link DNS-1200-05 affected
Version Status Constraints
20260205 affected —
D-Link DNS-1550-04 affected
Version Status Constraints
20260205 affected —

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_160/160.md cve-icon
https://vuldb.com/?ctiid.351122 cve-icon
https://vuldb.com/?id.351122 cve-icon
https://vuldb.com/?submit.770441 cve-icon
https://www.dlink.com/ cve-icon
History

Mon, 16 Mar 2026 03:45:00 +0000

Type Values Removed Values Added
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 issue is the function Local_Backup_Info of the file /cgi-bin/local_backup_mgr.cgi. This manipulation of the argument f_idx causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.
Title D-Link DNS-1550-04 local_backup_mgr.cgi Local_Backup_Info stack-based overflow
Weaknesses CWE-119
CWE-121
References
Metrics cvssV2_0

{'score': 9, 'vector': 'AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 8.8, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-03-16T03:32:10.022Z

Reserved: 2026-03-15T11:59:27.035Z

Link: CVE-2026-4211

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses