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. Public exploit code exists for this vulnerability, and no patch is currently available.

Technical ContextAI

Classified as CWE-77 (Command Injection). Affects Dir-823X Firmware. 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.