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ID

VAR-202603-1883


CVE

CVE-2026-4211


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.

Trust: 1.0

sources: NVD: CVE-2026-4211

AFFECTED PRODUCTS

vendor:dlinkmodel:dns-327lscope:lteversion:2026-02-05

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vendor:dlinkmodel:dns-1100-4scope:lteversion:2026-02-05

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vendor:dlinkmodel:dns-343scope:lteversion:2026-02-05

Trust: 1.0

vendor:dlinkmodel:dns-345scope:lteversion:2026-02-05

Trust: 1.0

vendor:dlinkmodel:dnr-326scope:lteversion:2026-02-05

Trust: 1.0

vendor:dlinkmodel:dns-1550-04scope:lteversion:2026-02-05

Trust: 1.0

vendor:dlinkmodel:dns-321scope:lteversion:2026-02-05

Trust: 1.0

vendor:dlinkmodel:dns-325scope:lteversion:2026-02-05

Trust: 1.0

vendor:dlinkmodel:dns-120scope:lteversion:2026-02-05

Trust: 1.0

vendor:dlinkmodel:dns-315lscope:lteversion:2026-02-05

Trust: 1.0

vendor:dlinkmodel:dns-323scope:lteversion:2026-02-05

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vendor:dlinkmodel:dns-326scope:lteversion:2026-02-05

Trust: 1.0

vendor:dlinkmodel:dns-340lscope:lteversion:2026-02-05

Trust: 1.0

vendor:dlinkmodel:dns-320lscope:lteversion:2026-02-05

Trust: 1.0

vendor:dlinkmodel:dns-320lwscope:lteversion:2026-02-05

Trust: 1.0

vendor:dlinkmodel:dns-726-4scope:lteversion:2026-02-05

Trust: 1.0

vendor:dlinkmodel:dnr-202lscope:lteversion:2026-02-05

Trust: 1.0

vendor:dlinkmodel:dns-322lscope:lteversion:2026-02-05

Trust: 1.0

vendor:dlinkmodel:dns-1200-05scope:lteversion:2026-02-05

Trust: 1.0

vendor:dlinkmodel:dns-320scope:lteversion:2026-02-05

Trust: 1.0

sources: NVD: CVE-2026-4211

CVSS

SEVERITY

CVSSV2

CVSSV3

cna@vuldb.com: CVE-2026-4211
value: HIGH

Trust: 1.0

nvd@nist.gov: CVE-2026-4211
value: CRITICAL

Trust: 1.0

cna@vuldb.com: CVE-2026-4211
severity: HIGH
baseScore: 9.0
vectorString: AV:N/AC:L/AU:S/C:C/I:C/A:C
accessVector: NETWORK
accessComplexity: LOW
authentication: SINGLE
confidentialityImpact: COMPLETE
integrityImpact: COMPLETE
availabilityImpact: COMPLETE
exploitabilityScore: 8.0
impactScore: 10.0
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 1.0

cna@vuldb.com: CVE-2026-4211
baseSeverity: HIGH
baseScore: 8.8
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: LOW
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 2.8
impactScore: 5.9
version: 3.1

Trust: 1.0

nvd@nist.gov: CVE-2026-4211
baseSeverity: CRITICAL
baseScore: 9.8
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 3.9
impactScore: 5.9
version: 3.1

Trust: 1.0

sources: NVD: CVE-2026-4211 // NVD: CVE-2026-4211

PROBLEMTYPE DATA

problemtype:CWE-121

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problemtype:CWE-119

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problemtype:CWE-787

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sources: NVD: CVE-2026-4211

EXTERNAL IDS

db:VULDBid:351122

Trust: 1.0

db:NVDid:CVE-2026-4211

Trust: 1.0

sources: NVD: CVE-2026-4211

REFERENCES

url:https://github.com/wudipjq/my_vuln/blob/main/d-link8/vuln_160/160.md

Trust: 1.0

url:https://www.dlink.com/

Trust: 1.0

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

Trust: 1.0

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

Trust: 1.0

url:https://vuldb.com/?submit.770441

Trust: 1.0

sources: NVD: CVE-2026-4211

SOURCES

db:NVDid:CVE-2026-4211

LAST UPDATE DATE

2026-03-19T23:44:02.744000+00:00


SOURCES UPDATE DATE

db:NVDid:CVE-2026-4211date:2026-03-19T14:29:21.813

SOURCES RELEASE DATE

db:NVDid:CVE-2026-4211date:2026-03-16T14:20:07.387