What is the CVSS score of CVE-2026-2210?

CVE-2026-2210 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: 0.2%.

Which versions of Dir 823x Firmware are affected by CVE-2026-2210?

A high-severity vulnerability affecting D-Link DIR-823X routers allows remote attackers to exploit the /goform/set_filtering function with a public exploit available.

Is there a public PoC exploit available for CVE-2026-2210?

Yes, a public proof-of-concept exploit is available for CVE-2026-2210. Prioritise patching immediately. EPSS: 0.2%.

How to fix or mitigate CVE-2026-2210?

Within 24 hours: Inventory all D-Link DIR-823X devices in production and isolate or restrict network access to affected units if operationally feasible. Within 7 days: Implement network segmentation to limit lateral movement from compromised devices and deploy WAF rules to block /goform/set_filtering requests from untrusted sources. Within 30 days: Replace affected DIR-823X devices with patched alternatives or vendor-approved models, monitor for indicators of compromise, and conduct security assessment of potentially affected network segments.

Dir 823x Firmware CVE-2026-2210

HIGH

Command Injection (CWE-77)

2026-02-09 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 11, 2026 - 18:36 vuln.today

Public exploit code

CVE Published

Feb 09, 2026 - 03:16 nvd

HIGH 7.2

DescriptionCVE.org

A vulnerability has been found in D-Link DIR-823X 250416. This affects the function sub_4211C8 of the file /goform/set_filtering. Such manipulation leads to os command injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

AnalysisAI

D-Link DIR-823X firmware versions up to 250416 contain an OS command injection vulnerability in the /goform/set_filtering function that allows remote attackers with high privileges to execute arbitrary commands with full system access. 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 crafted HTTP request to /goform/set_filtering

Exploit

Inject OS commands in function sub_4211C8

Impact

Execute arbitrary commands as router process

Access

Send crafted HTTP request to /goform/set_filtering

Exploit

Inject OS commands in function sub_4211C8

Impact

Execute arbitrary commands as router process

Vulnerability AssessmentAI

Exploitation	D-Link DIR-823X firmware 250416; authenticated administrative access (PR:H) required; /goform/set_filtering endpoint must be accessible and processing user input to sub_4211C8 function without proper command sanitization. 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 flaw, 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 production and isolate or restrict network access to affected units if operationally feasible. …

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

CVE-2026-2210 vulnerability details – vuln.today

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Dir 823x Firmware CVE-2026-2210

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