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

Should you act?

Exploited: patch now if you run it

CISA has confirmed exploitation in the wild. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.

• Yes, if you run D-Link Multiple NAS Devices. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2024-04-11, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2024-05-02; treat that as the outer limit, not the target.
• EPSS 98.1%, percentile 99.9: FIRST’s model estimates a 98.1% chance of exploitation activity in the next 30 days, higher than 99.9% of all scored CVEs (very high). EPSS is a probability, not a verdict.
• Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.

What it is

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/nassharing.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.

CISA’s summary

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.

Weakness type: CWE-798.

Product: D-Link Multiple NAS Devices · Assigned by: VulDB · Published: 2024-04-04

Affected and fixed versions

Severity scores

• Attack vector: network (remotely reachable)
• Attack complexity: low
• Privileges required: none (no login)
• User interaction: none
• Scope: unchanged

CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.

Exploitation and urgency

• CISA KEV: added 2024-04-11; federal due date 2024-05-02. Known ransomware use: Unknown.
• CISA required action: 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 SSVC assessment: exploitation active, automatable yes, technical impact total.
• FIRST EPSS (model of 2026-10-21): 98.11% probability of exploitation activity in the next 30 days; percentile 99.9.

Timeline

• 2024-04-04 — CVE record published by VulDB
• 2024-04-11 — Added to CISA’s Known Exploited Vulnerabilities catalog
• 2024-05-02 — CISA remediation deadline for US federal agencies
• 2025-10-21 — CVE record last updated

Sources and references

Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.

Vendor and project advisories, patches

1. Listed in CISA KEV notes (supportannouncement.us.dlink.com) supportannouncement.us.dlink.com

Vulnerability records

1. CVE.org record CVE-2024-3272 cve.org
2. NVD entry CVE-2024-3272 nvd.nist.gov

Government

1. CISA Known Exploited Vulnerabilities catalog entry cisa.gov

Other references from the CVE record and advisory

1. VDB-259283 | D-Link DNS-320L/DNS-325/DNS-327L/DNS-340L HTTP GET Request nas_sharing.cgi hard-coded credentials vuldb.com
2. VDB-259283 | CTI Indicators (IOB, IOC, TTP, IOA) vuldb.com
3. github.com github.com

All exploited D-Link vulnerabilities · Today’s Security Digest