Overview
The cybersecurity landscape has been shaken by the discovery of a critical vulnerability, CVE-2025-8824, affecting a range of Linksys products. This vulnerability may potentially lead to system compromise and data leakage, posing a significant risk to users of the affected models. In particular, it affects the Linksys RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000 up to version 20250801.
The vulnerability lies within the setRIP function of the /goform/setRIP file. If exploited, this vulnerability could potentially enable an attacker to execute arbitrary code on the affected device. The issue is of particular concern as the exploit has been publicly disclosed and remains unpatched by the vendor, despite early notification.
Vulnerability Summary
CVE ID: CVE-2025-8824
Severity: Critical (8.8 CVSS score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
Linksys RE6250 | Up to 20250801
Linksys RE6300 | Up to 20250801
Linksys RE6350 | Up to 20250801
Linksys RE6500 | Up to 20250801
Linksys RE7000 | Up to 20250801
Linksys RE9000 | Up to 20250801
How the Exploit Works
The vulnerability originates from incorrect buffer management within the setRIP function of the /goform/setRIP file. The manipulation of the arguments RIPmode/RIPpasswd can lead to a stack-based buffer overflow. This type of vulnerability typically allows an attacker to overwrite the intended buffer’s boundaries, potentially leading to the execution of arbitrary code.
Conceptual Example Code
A potential exploitation scenario might involve sending a specially crafted HTTP request to the vulnerable endpoint. An example could be:
POST /goform/setRIP HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
RIPmode=1&RIPpasswd=A*10000In this conceptual example, the RIPpasswd parameter is filled with a large number of characters, far exceeding the size of the buffer that the setRIP function has allocated for it. This could potentially lead to a buffer overflow, depending on the specifics of the implementation.