What is the CVSS score of CVE-2026-2142?

CVE-2026-2142 has a CVSS 3.1 base score of 7.2 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Dir 823x Firmware are affected by CVE-2026-2142?

A high-severity vulnerability (CVE-2026-2142) affects D-Link DIR-823X routers, with a public exploit already available.

Is there a public PoC exploit available for CVE-2026-2142?

Yes, a public proof-of-concept exploit is available for CVE-2026-2142. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-2142?

Within 24 hours: Inventory all D-Link DIR-823X devices in your environment and isolate affected units from production networks if possible. Within 7 days: Implement network segmentation to restrict administrative access to these devices and monitor for exploitation attempts. Within 30 days: Plan replacement or upgrade strategy with D-Link, pending patch availability; escalate with vendor for timeline on security update.

Dir 823x Firmware CVE-2026-2142

HIGH

Command Injection (CWE-77)

2026-02-08 cna@vuldb.com

D-Link Command Injection Dir 823x Firmware

7.2

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.2 HIGH

AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Feb 10, 2026 - 14:57 vuln.today

Public exploit code

CVE Published

Feb 08, 2026 - 08:15 nvd

HIGH 7.2

DescriptionCVE.org

A weakness has been identified in D-Link DIR-823X 250416. This vulnerability affects the function sub_420688 of the file /goform/set_qos. Executing a manipulation can lead to os command injection. The attack can be executed remotely. The exploit has been made available to the public and could be used for attacks.

AnalysisAI

Remote code execution in D-Link DIR-823X firmware via command injection in the QoS configuration function allows unauthenticated attackers to execute arbitrary OS commands over the network. The vulnerability affects the /goform/set_qos endpoint and has public exploit code available, increasing the risk of active exploitation. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Send authenticated HTTP POST request to /goform/set_qos

Exploit

Inject OS command in QoS parameter

Impact

Execute arbitrary command as root user

Access

Send authenticated HTTP POST request to /goform/set_qos

Exploit

Inject OS command in QoS parameter

Impact

Execute arbitrary command as root user

Vulnerability AssessmentAI

Exploitation	D-Link DIR-823X router with firmware 250416 or earlier. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	CVSS 7.2 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	A remote attacker could exploit this vulnerability to os command injection.
Remediation	Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Inventory all D-Link DIR-823X devices in your environment and isolate affected units from production networks if possible. …

Threat intelligence, references, and detailed analysis are available after sign-in.

CVE-2026-2142 vulnerability details – vuln.today

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Dir 823x Firmware CVE-2026-2142

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

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Attack ChainAIDerived

Vulnerability AssessmentAI

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External POC / Exploit Code