High severity7.2NVD Advisory· Published Oct 17, 2018· Updated Jun 17, 2026
CVE-2018-3954
CVE-2018-3954
Description
Devices in the Linksys ESeries line of routers (Linksys E1200 Firmware Version 2.0.09 and Linksys E2500 Firmware Version 3.0.04) are susceptible to OS command injection vulnerabilities due to improper filtering of data passed to and retrieved from NVRAMData entered into the 'Router Name' input field through the web portal is submitted to apply.cgi as the value to the 'machine_name' POST parameter. When the 'preinit' binary receives the SIGHUP signal it enters a code path that calls a function named 'set_host_domain_name' from its libshared.so shared object.
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Affected products
7- cpe:2.3:o:linksys:e1200_firmware:2.0.09:*:*:*:*:*:*:*
- cpe:2.3:o:linksys:e2500_firmware:3.0.04:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
1- talosintelligence.com/vulnerability_reports/TALOS-2018-0625nvdExploitThird Party Advisory
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