CVE-2026-82691
Received Received - Intake

Remote Command Injection in D-Link DNS-320L, DNS-327L, DNS-340L and DNS-345

Publication date: 2026-08-31

Last updated on: 2026-08-31

Assigner: VulDB

Description
A vulnerability has been found in D-Link DNS-320L, DNS-327L, DNS-340L and DNS-345 up to 20260717. Affected by this issue is some unknown functionality of the file /cgi-bin/usb_device.cgi of the component CGI Handler. Such manipulation of the argument f_ups_ip leads to os command injection. The attack may be performed from remote. The exploit has been disclosed to the public and may be used.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-08-31
Last Modified
2026-08-31
Generated
2026-08-31
AI Q&A
2026-08-31
EPSS Evaluated
N/A
NVD
CVE-2026-82691
EUVD
EUVD-2026-68485

Affected Vendors & Products

Showing 8 associated CPEs
Vendor Product Version / Range
d-link dns-320l to 20260717 (inc)
d-link dns-327l to 20260717 (inc)
d-link dns-340l to 20260717 (inc)
d-link dns-345 to 20260717 (inc)
d-link dns-320l *
d-link dns-327l *
d-link dns-340l *
d-link dns-345 to 20260717 (exc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-77 The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
CWE-78 The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

CVE-2026-82691 is an OS command injection vulnerability in D-Link DNS-320L, DNS-327L, DNS-340L, and DNS-345 NAS devices. It exists in the /cgi-bin/usb_device.cgi file where the f_ups_ip parameter is improperly sanitized. Attackers can inject malicious commands via crafted HTTP POST requests, leading to remote command execution.

Detection Guidance

Check for unauthorized access to the /cgi-bin/usb_device.cgi endpoint. Monitor network traffic for suspicious HTTP POST requests targeting this path with parameters like f_ups_ip or cmd=GUI_ups_add. Inspect system logs for unexpected command execution patterns.

Impact Analysis

This vulnerability allows authenticated attackers to execute arbitrary commands on the device. This could lead to unauthorized access to stored data, alteration of device settings, disruption of storage services, or complete takeover of the NAS device.

Compliance Impact

This vulnerability allows remote command execution on affected D-Link devices, potentially enabling unauthorized access to stored data. For GDPR, this could lead to unauthorized processing or disclosure of personal data, violating principles of data protection and user consent. Under HIPAA, it may expose protected health information if medical data is stored on these devices, risking breaches of confidentiality and integrity requirements.

Mitigation Strategies

Disable remote access to the vulnerable CGI handler if possible. Apply firmware updates from D-Link if available. Restrict network access to the device using firewalls. Monitor for unusual activity and consider isolating the device from critical systems.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-82691. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart