What is the CVSS score of CVE-2026-2157?

CVE-2026-2157 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: 0.4%.

Which versions of Dir 823x Firmware are affected by CVE-2026-2157?

A high-severity vulnerability in D-Link DIR-823X routers could allow unauthorized attackers to modify network routing configurations, potentially enabling man-in-the-middle attacks or network traffic…

Is there a public PoC exploit available for CVE-2026-2157?

Yes, a public proof-of-concept exploit is available for CVE-2026-2157. Prioritise patching immediately. EPSS: 0.4%.

How to fix or mitigate CVE-2026-2157?

Within 24 hours: Inventory all D-Link DIR-823X devices (model 250416) in your network and isolate affected units from critical systems if possible. Within 7 days: Implement network segmentation to restrict administrative access to these devices and apply WAF rules to block requests to /goform/set_static_route_table. Within 30 days: Evaluate replacement with alternative router vendors that provide active security support, or contact D-Link for patch availability status and interim security updates.

Dir 823x Firmware CVE-2026-2157

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 11, 2026 - 18:44 vuln.today

Public exploit code

CVE Published

Feb 08, 2026 - 15:15 nvd

HIGH 7.2

DescriptionCVE.org

A security vulnerability has been detected in D-Link DIR-823X 250416. This affects the function sub_4175CC of the file /goform/set_static_route_table. Such manipulation of the argument interface/destip/netmask/gateway/metric leads to os command injection. The attack may be performed from remote. The exploit has been disclosed publicly and may be used.

AnalysisAI

Remote code execution in D-Link DIR-823X routers through OS command injection in the static route configuration endpoint allows unauthenticated remote attackers to execute arbitrary commands with high privileges. The vulnerability affects the /goform/set_static_route_table function and can be exploited by manipulating interface, destination IP, netmask, gateway, or metric parameters. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Authenticate as high-privilege admin

Exploit

Send crafted HTTP request to /goform/set_static_route_table

Execution

Inject OS commands in interface/destip/netmask/gateway/metric parameters

Impact

Execute arbitrary commands as root

Access

Authenticate as high-privilege admin

Exploit

Send crafted HTTP request to /goform/set_static_route_table

Execution

Inject OS commands in interface/destip/netmask/gateway/metric parameters

Impact

Execute arbitrary commands as root

Vulnerability AssessmentAI

Exploitation	D-Link DIR-823X firmware 250416 with /goform/set_static_route_table 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 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 (model 250416) in your network and isolate affected units from critical systems if possible. …

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

CVE-2026-2157 vulnerability details – vuln.today

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Dir 823x Firmware CVE-2026-2157

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