What is the CVSS score of CVE-2026-2084?

CVE-2026-2084 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: 0.3%.

Which versions of Dir 823x Firmware are affected by CVE-2026-2084?

A high-severity vulnerability (CVE-2026-2084) affects D-Link DIR-823X routers with a public exploit available, creating immediate risk to organizations relying on these devices for network access and…

Is there a public PoC exploit available for CVE-2026-2084?

Yes, a public proof-of-concept exploit is available for CVE-2026-2084. Prioritise patching immediately. EPSS: 0.3%.

How to fix or mitigate CVE-2026-2084?

Within 24 hours: Identify all D-Link DIR-823X 250416 devices in your environment and isolate them from sensitive network segments; document affected asset inventory. Within 7 days: Implement network access controls (WAF rules blocking /goform/set_language requests, disable remote management if enabled, restrict device access to trusted administrative networks only). Within 30 days: Develop device replacement plan with vendor; evaluate alternative router solutions and begin procurement; contact D-Link for patch timeline and temporary mitigations.

Dir 823x Firmware CVE-2026-2084

HIGH

Command Injection (CWE-77)

2026-02-07 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 - 21:54 vuln.today

PoC Detected

Feb 10, 2026 - 14:57 vuln.today

Public exploit code

CVE Published

Feb 07, 2026 - 12:15 nvd

HIGH 7.2

DescriptionCVE.org

A weakness has been identified in D-Link DIR-823X 250416. This impacts an unknown function of the file /goform/set_language. Executing a manipulation of the argument langSelection can lead to os command injection. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks.

AnalysisAI

D-Link DIR-823X firmware contains a command injection vulnerability in the /goform/set_language endpoint that allows remote attackers with high privileges to execute arbitrary OS commands via manipulation of the langSelection parameter. Public exploit code exists for this vulnerability, and no patch is currently available. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Send HTTP request to /goform/set_language

Exploit

Inject OS command in langSelection parameter

Impact

Execute arbitrary system command as root

Access

Send HTTP request to /goform/set_language

Exploit

Inject OS command in langSelection parameter

Impact

Execute arbitrary system command as root

Vulnerability AssessmentAI

Exploitation	D-Link DIR-823X firmware 250416 with /goform/set_language endpoint accessible. … 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: Identify all D-Link DIR-823X 250416 devices in your environment and isolate them from sensitive network segments; document affected asset inventory. …

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

CVE-2026-2084 vulnerability details – vuln.today

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Dir 823x Firmware CVE-2026-2084

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

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Attack ChainAIDerived

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External POC / Exploit Code