Overview
The cybersecurity world is faced with another serious vulnerability, this time affecting a wide range of Linksys products. The vulnerability, tracked as CVE-2025-9482, is a critical flaw that can potentially compromise the system or cause data leakage. Affecting various versions of Linksys RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000, the vulnerability has far-reaching effects on both businesses and individual users who rely on these devices. The gravity of the situation is compounded by the fact that the exploit has been made public, potentially becoming a tool for cybercriminals.
Vulnerability Summary
CVE ID: CVE-2025-9482
Severity: Critical (8.8 CVSS Score)
Attack Vector: Remote
Privileges Required: None
User Interaction: None
Impact: System compromise or data leakage
Affected Products
Escape the Surveillance Era
Most apps won’t tell you the truth.
They’re part of the problem.
Phone numbers. Emails. Profiles. Logs.
It’s all fuel for surveillance.
Ameeba Chat gives you a way out.
- • No phone number
- • No email
- • No personal info
- • Anonymous aliases
- • End-to-end encrypted
Chat without a trace.
Product | Affected Versions
Linksys RE6250 | 1.0.013.001
Linksys RE6300 | 1.0.04.001
Linksys RE6350 | 1.0.04.002
Linksys RE6500 | 1.1.05.003
Linksys RE7000 | 1.2.07.001
Linksys RE9000 | 1.2.07.001
How the Exploit Works
The vulnerability resides in the function portRangeForwardAdd of the file /goform/portRangeForwardAdd. By manipulating the argument ruleName/schedule/inboundFilter/TCPPorts/UDPPorts, an attacker can cause a stack-based buffer overflow. A buffer overflow occurs when more data is written to a buffer than it can handle, causing the excess data to overflow into adjacent memory spaces. This can result in erratic program behavior, including memory access errors, incorrect results, program termination, or a breach of system security.
Conceptual Example Code
The following conceptual example illustrates how an attacker might exploit this vulnerability:
POST /goform/portRangeForwardAdd HTTP/1.1
Host: target.router.com
Content-Type: application/x-www-form-urlencoded
ruleName=overflown_data&schedule=any&inboundFilter=allow&TCPPorts=all&UDPPorts=allIn this example, the “overflown_data” is a large data string that causes the buffer overflow. It’s important to note that this is a generalized example, and the actual exploit may be more complex.
