How widely exploitable is this vulnerability?

Exploitability depends on whether an attacker can reach the router's management interface and, where authentication is enforced, whether they can obtain valid credentials or bypass access controls. In environments where the interface is exposed to untrusted networks, the risk is significantly higher, especially given the existence of public exploits.

Does an attacker need valid credentials to exploit it?

Many deployments require authentication for `/goform` handlers, but real-world exploitability is influenced by password strength, reuse, and any additional protections in place. Even when authentication is required, weak, default, or leaked credentials can make exploitation feasible.

What is the safest general fix pattern?

The most robust fix is to remove any reliance on shell command construction from user-supplied configuration parameters and instead use safe, parameterized system APIs. Combined with strict input validation and least-privilege service accounts, this eliminates the injection vector at its source.

Severity:

HIGH RISK

(7.2)

OS Command Injection (CWE-78) in D-Link DIR-823X Configuration Parameter Handler

CVE-2026-2120

Published:

Feb 7, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-306

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

Account Takeover / Loss of Account Control

February 17, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Remote Code Execution on the Server Host

February 17, 2026

Vulnerability Type

Category:

OS Command Injection

CWE:

CWE-77;CWE-78

Impact:

Remote Code Execution on Network Appliance

Severity:

HIGH RISK

(7.2)

CVSS Version:

3.1

Vulnerability Type

Category:

OS Command Injection

CWE:

CWE-77;CWE-78

Impact:

Remote Code Execution on Network Appliance

Severity:

HIGH RISK

(7.2)

CVSS Version:

3.1

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Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

OS Command Injection (CWE-78) in D-Link DIR-823X Configuration Parameter Handler

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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