Published: 2025-12-06T11:15:48.437
Overview
A high-severity vulnerability, identified as CVE-2025-14134, has been discovered in several Linksys RE series range extenders. This vulnerability affects the RE6500, RE6250, RE6300, RE6350, RE7000, and RE9000 models. Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code remotely.
Technical Details
The vulnerability is a stack-based buffer overflow located in the RE2000v2Repeater_get_wireless_clientlist_setClientsName function within the mod_form.so file. By manipulating the clientsname_0 argument, an attacker can overflow the buffer on the stack, potentially overwriting critical data and injecting malicious code. The vulnerability is remotely exploitable, making it a significant threat.
CVSS Analysis
- Severity: HIGH
- CVSS Score: 8.8
A CVSS score of 8.8 indicates a high-severity vulnerability. This score reflects the potential for significant impact, including remote code execution and potential compromise of the affected device and potentially the network it is connected to.
Possible Impact
Exploiting CVE-2025-14134 can have severe consequences, including:
- Remote Code Execution: An attacker can execute arbitrary code on the affected device.
- Device Compromise: The attacker can gain full control of the Linksys range extender.
- Network Intrusion: A compromised range extender can be used as a launchpad for further attacks on other devices on the network.
- Data Theft: Potentially, sensitive data passing through the compromised range extender could be intercepted.
- Denial of Service: The vulnerability could be exploited to crash the device, leading to a denial of service.
Mitigation or Patch Steps
Unfortunately, the vendor, Linksys, has not responded to disclosure reports and has not provided a patch or firmware update to address this vulnerability as of this writing. Users are strongly advised to take the following precautionary measures:
- Disable Remote Management: Disable remote management access to the range extender if it is enabled. This will reduce the attack surface.
- Network Segmentation: Isolate the range extender on a separate network segment to limit the potential impact of a compromise.
- Monitor Network Traffic: Monitor network traffic for any suspicious activity originating from or destined to the range extender.
- Strong Passwords: Ensure a strong, unique password is used for the device’s web interface.
- Consider Replacement: If continued secure operation is critical, consider replacing the affected device with a more secure alternative from a vendor with a better track record of security responsiveness.
It is crucial that Linksys releases a patch as soon as possible. Users should regularly check the Linksys support website for updates.