D-Link Multiple NAS Devices

CVE-2024-3272: D-Link Multiple NAS Devices Use of Hard-Coded Credentials Vulnerability

Is it exploited?

Yes. CISA added it to the Known Exploited Vulnerabilities catalog on 11 Apr 2024, 7 days after the CVE record was published.

How likely is exploitation in the next 30 days?

98.1%

EPSS score, percentile 99.9 of all scored records

How severe?

9.8 Critical

CVSS v3.1 base score, given by the CNA

What should I do?

Required action (CISA), due 2 May 2024: This vulnerability affects legacy D-Link products. All associated hardware revisions have reached their end-of-life (EOL) or end-of-service (EOS) life cycle and should be retired and replaced per vendor instructions.

The CVE record links no vendor advisory, patch or mitigation.

Which versions are affected?

Affected: 20240403; 20240403; 20240403; 20240403

Versions by product

Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

What to do

Required action, set by CISA

This vulnerability affects legacy D-Link products. All associated hardware revisions have reached their end-of-life (EOL) or end-of-service (EOS) life cycle and should be retired and replaced per vendor instructions.

CISA due date for this action: 2 May 2024.

Advisories and patches

The CVE record links no vendor advisory, patch or mitigation.

Linked from CISA's catalog entry

Affected products and versions

As listed in the CVE record.

D-Link DNS-320L
Status	Versions
Affected	20240403

D-Link DNS-325
Status	Versions
Affected	20240403

D-Link DNS-327L
Status	Versions
Affected	20240403

D-Link DNS-340L
Status	Versions
Affected	20240403

Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

About this vulnerability

D-Link DNS-320L, DNS-325, DNS-327L, and DNS-340L contains a hard-coded credential that allows an attacker to conduct authenticated command injection, leading to remote, unauthorized code execution.

Summary: CISA's KEV catalog, as of 28 Oct 2026.

CISA added CVE-2024-3272 to its Known Exploited Vulnerabilities (KEV) catalog on 11 Apr 2024.
CISA's ransomware flag for this entry is "Unknown": no evidence of ransomware use in the catalog, which is not proof of none.
The due date CISA sets for the required action is 2 May 2024.
The CVE record was published on 4 Apr 2024, 7 days before it was added to KEV.
The CVE record carries a CVSS v3.1 base score of 9.8 (Critical), given by its CNA.
FIRST's EPSS model puts the probability of exploitation in the next 30 days at 98.1% (percentile 99.9), as of 28 Oct 2026.
CISA's SSVC assessment in the CVE record: exploitation active, automatable yes, technical impact total.

Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026. About the data.

Description

D-Link DNS-320L/DNS-325/DNS-327L/DNS-340L HTTP GET Request nas_sharing.cgi hard-coded credentials

** UNSUPPORTED WHEN ASSIGNED ** A vulnerability, which was classified as very critical, has been found in D-Link DNS-320L, DNS-325, DNS-327L and DNS-340L up to 20240403. This issue affects some unknown processing of the file /cgi-bin/nas_sharing.cgi of the component HTTP GET Request Handler. The manipulation of the argument user with the input messagebus leads to hard-coded credentials. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-259283. NOTE: This vulnerability only affects products that are no longer supported by the maintainer. NOTE: Vendor was contacted early and confirmed immediately that the product is end-of-life. It should be retired and replaced.

Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

Weakness

CWE-798: Hard-coded Credentials

CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record and the KEV entry.

Timeline

Date	Event
4 Apr 2024	CVE record published
11 Apr 2024	Added to CISA KEV
2 May 2024	CISA due date for the required action
21 Oct 2025	CVE record last updated

References

VDB-259283 | D-Link DNS-320L/DNS-325/DNS-327L/DNS-340L HTTP GET Request nas_sharing.cgi hard-coded credentials (Vulnerability database, Technical description)
github.com (Exploit)
VDB-259283 | CTI Indicators (IOB, IOC, TTP, IOA)
supportannouncement.us.dlink.com

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