OS Command Injection Vulnerability in LB-LINK BL-X26 HTTP Handler
CVE-2025-9579

5.3MEDIUM

Key Information:

Vendor

Lb-link

Status
Bl-x26
Vendor
CVE Published:
28 August 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-9579?

A security vulnerability has been discovered in LB-LINK's BL-X26 router, specifically within the HTTP Handler component. The issue arises from an inadequately validated input parameter in the /goform/set_hidessid_cfg file, allowing attackers to manipulate the 'enable' argument for executing arbitrary OS commands. This vulnerability is particularly concerning as it can be exploited remotely, exposing the device to unauthorized access and control. The exploit code has been made publicly available, emphasizing the urgent need for users to mitigate this risk. Despite the early notification to the vendor regarding this vulnerability, there has been no acknowledgment or response.

Affected Version(s)

BL-X26 1.2.8

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-2025-9579 - Proof of Concept

References

https://vuldb.com/?id.321692
vdb-entrytechnical-description
https://vuldb.com/?ctiid.321692
signaturepermissions-required
https://vuldb.com/?submit.636082
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

QMSSDXN (VulDB User)
.
CVE-2025-9579 : OS Command Injection Vulnerability in LB-LINK BL-X26 HTTP Handler