OS Command Injection in D-Link DIR-823X Router
CVE-2026-2143

8.6HIGH

Key Information:

Vendor

D-link
Status
Dir-823x
Vendor
CVE Published:
8 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-2143?

A security vulnerability exists in the D-Link DIR-823X 250416 router, specifically in the DDNS Service component. The vulnerability arises from improper handling of user inputs within the /goform/set_ddns file, leading to potential OS command injection. This flaw can be exploited remotely, allowing attackers to execute arbitrary commands on the affected device. Given that the exploit has been publicly disclosed, it is essential to apply necessary patches or mitigations to safeguard the device from unauthorized access and manipulation.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Affected Version(s)

DIR-823X 250416

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-2143 - Proof of Concept

References

https://vuldb.com/?id.344778
vdb-entrytechnical-description
https://vuldb.com/?ctiid.344778
signaturepermissions-required
https://vuldb.com/?submit.747492
third-party-advisory

CVSS V4

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

jiefengliang (VulDB User)
JSON
.