Known exploited vulnerability · CISA KEV

CVE-2024-3273: D-Link Multiple NAS Devices Command Injection Vulnerability

D-Link DNS-320L, DNS-325, DNS-327L, and DNS-340L contain a command injection vulnerability. When combined with CVE-2024-3272, this can lead to remote, unauthorized code execution.

CVE-2024-3273

Exploited in the wild. Fix this first.

CISA added it to the Known Exploited Vulnerabilities catalog on 2024-04-11: attackers are using it right now.

CISA KEV: Listed; Added 2024-04-11 · federal fix-by 2024-05-02
EPSS (30 days): over 99.9%; Higher than 99.9% of CVEs · 2026-11-01
CVSS v3.1: 9.8 Critical; CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What CISA says

D-Link Multiple NAS Devices Command Injection Vulnerability

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.

NVD description · published 2024-04-04

** UNSUPPORTED WHEN ASSIGNED ** A vulnerability, which was classified as critical, was found in D-Link DNS-320L, DNS-325, DNS-327L and DNS-340L up to 20240403. Affected is an unknown function of the file /cgi-bin/nas_sharing.cgi of the component HTTP GET Request Handler. The manipulation of the argument system leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-259284. 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.

Full record on NVD

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How to check if you are exposed to CVE-2024-3273

Find every D-Link Multiple NAS Devices system you or your clients run, including ones exposed to the internet. Those come first: CISA only lists flaws attackers are already using.
Compare each version with the fixed versions in the vendor advisory below. Where no fix exists yet, apply the vendor’s mitigation or take the system off the internet.
Run a credentialed vulnerability scan to catch the systems you missed, then check that the next scan no longer reports CVE-2024-3273.

US federal agencies had to fix this by 2024-05-02. Everyone else should treat that deadline as a guide: if it has passed, this is overdue.

Affected versions

Versions the National Vulnerability Database lists as vulnerable to CVE-2024-3273. Check the vendor advisory for the exact fixed builds before you sign anything off.

Product	Vulnerable versions
D-Link Dns-320l Firmware	1.01.0702.2013; 1.03.0904.2013; 1.11
D-Link Dns-120 Firmware	all versions
D-Link Dnr-202l Firmware	all versions
D-Link Dns-315l Firmware	all versions
D-Link Dns-320 Firmware	all versions
D-Link Dns-320lw Firmware	all versions

NVD lists 14 more affected products; see the full record on NVD.

Timeline

2024-04-04 · Published in the National Vulnerability Database
2024-04-11 · Added to CISA's Known Exploited Vulnerabilities catalog, 7 days after it was published
2024-05-02 · Fix-by date for US federal agencies, passed 913 days ago

Vendor advisories and fixes

https://supportannouncement.us.dlink.com/security/publication.aspx?name=SAP10383

Weakness type

CWE-77

More exploited D-Link vulnerabilities

CISA lists 26 exploited D-Link vulnerabilities. The closest matches:

Keep going

Sources: CISA Known Exploited Vulnerabilities catalog (version 2026.10.30); EPSS data from FIRST.org; CVSS and descriptions from the NIST National Vulnerability Database. Checked 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.