What is the CVSS score of CVE-2026-2175?

CVE-2026-2175 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-2026-2175?

D-Link DIR-823X routers are vulnerable to a HIGH severity attack targeting UPnP functionality that could allow unauthorized network access or device compromise.

Is there a public PoC exploit available for CVE-2026-2175?

Yes, a public proof-of-concept exploit is available for CVE-2026-2175. Prioritise patching immediately. EPSS: 0.4%.

How to fix or mitigate CVE-2026-2175?

Within 24 hours: Inventory all D-Link DIR-823X devices in production and isolate affected units from critical network segments. Within 7 days: Disable UPnP services on all affected routers and implement network access controls restricting the /goform/set_upnp endpoint. Within 30 days: Develop a replacement strategy for DIR-823X units with patched alternatives or newer device models, prioritizing critical network locations.

Dir 823x Firmware CVE-2026-2175

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 - 18:38 vuln.today

Public exploit code

CVE Published

Feb 08, 2026 - 19:16 nvd

HIGH 7.2

DescriptionCVE.org

A weakness has been identified in D-Link DIR-823X 250416. This vulnerability affects the function sub_420618 of the file /goform/set_upnp. This manipulation of the argument upnp_enable causes os command injection. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks.

AnalysisAI

Unauthenticated attackers can execute arbitrary operating system commands on D-Link DIR-823X routers through the /goform/set_upnp endpoint via the upnp_enable parameter. Public exploit code is available for this vulnerability, and no patch has been released. This allows complete compromise of affected devices with high impact on confidentiality, integrity, and availability.

Technical ContextAI

Classified as CWE-77 (Command Injection). Affects Dir-823X Firmware. A weakness has been identified in D-Link DIR-823X 250416. This vulnerability affects the function sub_420618 of the file /goform/set_upnp. This manipulation of the argument upnp_enable causes os command injection. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks.