OS Command Injection in D-Link DIR-823X Router
CVE-2026-2129

8.6HIGH

Key Information:

Vendor

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-2129?

A security issue has been identified in the D-Link DIR-823X router, specifically within the functionality of the /goform/set_ac_status file. This vulnerability allows an attacker to perform an OS command injection by manipulating certain arguments, which can be exploited remotely. The potential for remote execution of commands poses a significant risk, as the exploit method has been publicly disclosed. Users of the affected D-Link product should take immediate action to secure their devices against this vulnerability.

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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-2026-2129 - Proof of Concept

References

https://vuldb.com/?id.344764
vdb-entrytechnical-description
https://vuldb.com/?ctiid.344764
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https://vuldb.com/?submit.746935
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)
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