CVE Tools

CVE-2026-4211

D-Link DNS-1550-04 local_backup_mgr.cgi Local_Backup_Info stack-based overflow

Published: Mar 16, 2026Updated: Mar 19, 2026 Sources: CVE List NVDCWE-119

No Known Exploits

No Fix Available

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.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-119 CWE-121 CWE-787

Affected Products

dnr-202l firmware dlink Networking Infrastructure

dnr-326 firmware dlink Networking Infrastructure

dns-1100-4 firmware dlink Networking Infrastructure

dns-120 firmware dlink Networking Infrastructure

dns-1200-05 firmware dlink Networking Infrastructure

dlinkcommercialTWNetworking Infrastructure

and 35 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques

Initial Access

Privilege Escalation

View detailed technique mapping

References

https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_160/160.md

https://vuldb.com/?ctiid.351122

https://vuldb.com/?id.351122

and 2 more references View all →

Timeline

Published

Mar 16, 2026

Last Updated

Mar 19, 2026

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