CVE intelligence and bounded remediation

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

Critical CVSS 9.8 CISA KEV

** 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.

Severity
Critical
CVSS
9.8 (3.1)
Published
2024-04-04
CISA KEV
Known exploited
Ecosystem
operating-system
Weaknesses
CWE-77

Affected products

  • dlink / dns-320l_firmware / 1.01.0702.2013
  • dlink / dns-320l_firmware / 1.03.0904.2013
  • dlink / dns-320l_firmware / 1.11
  • dlink / dns-120_firmware
  • dlink / dnr-202l_firmware
  • dlink / dns-315l_firmware

Showing 6 representative product identities from 23 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Command, code, expression, and template injection

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Check exposure

  • Trace untrusted values to process execution, interpreters, evaluators, template engines, dynamic imports, and administrative scripting features.
  • Determine whether the affected path is reachable across each trust boundary and which service account or host privilege it inherits.
  • Review configuration for optional execution features, unsafe compatibility modes, and shell invocation.

Remediate safely

  • Replace string-built commands or evaluated code with fixed operations and structured argument APIs that do not invoke a shell.
  • Use strict allowlists for operation identifiers and reject unexpected input before it reaches any interpreter.
  • Update the affected component and add inert regression tests covering metacharacters, encoding variants, and alternate request paths.

Authoritative sources

Complete CVE record and remediation plan

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