Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2021-27256

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R7800 firmware version 1.0.2.76. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the handling of the rc_service parameter provided to apply_save.cgi. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-12355.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 60.3%
CVSS Severity
CVSS v3 Score 8.8
CVSS v2 Score 8.3
Products affected by CVE-2021-27256


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