Command Injection Vulnerability in D-Link DIR-816L Router
CVE-2025-7836

5.3MEDIUM

Key Information:

Vendor

D-link
Status
Dir-816l
Vendor
CVE Published:
19 July 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-7836?

A command injection vulnerability exists in the D-Link DIR-816L router within the function lxmldbc_system of the Environment Variable Handler component. This vulnerability allows attackers to execute arbitrary commands remotely via specially crafted requests. The impact is particularly concerning for products that are no longer maintained, as the weakness could be easily exploited by unauthorized users. Organizations using affected versions should take immediate security measures, including network segmentation and device replacement, to mitigate potential risks.

Affected Version(s)

DIR-816L 2.06B01

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-2025-7836 - Proof of Concept

References

https://vuldb.com/?id.316939
vdb-entrytechnical-description
https://vuldb.com/?ctiid.316939
signaturepermissions-required
https://vuldb.com/?submit.617359
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

bananaship (VulDB User)
.
CVE-2025-7836 : Command Injection Vulnerability in D-Link DIR-816L Router