Command Injection Vulnerability in D-Link DIR-823X Router
CVE-2025-10634

5.3MEDIUM

Key Information:

Vendor

D-link
Status
Dir-823x
Vendor
CVE Published:
18 September 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-10634?

A command injection vulnerability has been discovered in the D-Link DIR-823X series routers due to an unsafe handling of environment variables in the /usr/sbin/goahead component, particularly within the sub_412E7C function. This flaw allows an attacker to manipulate arguments such as terminal_addr, server_ip, and server_port, enabling them to execute arbitrary commands on the affected devices remotely. The risk is heightened by the public availability of proof-of-concept exploits, making it imperative for users to apply security patches to safeguard their systems.

Affected Version(s)

DIR-823X 240126

DIR-823X 240802

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-2025-10634 - Proof of Concept

References

https://vuldb.com/?id.324662
vdb-entrytechnical-description
https://vuldb.com/?ctiid.324662
signaturepermissions-required
https://vuldb.com/?submit.650792
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
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

BediveRE (VulDB User)
JSON
.
CVE-2025-10634 : Command Injection Vulnerability in D-Link DIR-823X Router