CVE-2021-34980: NETGEAR r6260 Firmware

High severity, CVSS 8.8. EPSS: 1.4% chance of exploitation in the next 30 days.

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6260 1.1.0.78_1.0.1 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the setupwizard.cgi page. When parsing the SOAP_LOGIN_TOKEN environment variable, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-14107.

Affected products

• NETGEAR r6260 Firmware: version 1.1.0.78_1.0.1 only

Published 2022-01-13. Last modified 2026-06-17.