CVE-2020-27866: NETGEAR Multiple Routers mini_httpd Authentication Bypass Vulnerability
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R7450, JNR3210, WNR2020, Nighthawk AC2100, and Nighthawk AC2400 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the minihttpd service, which listens on TCP port 80 by default. The issue results from incorrect string matching logic when accessing protected pages. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root.
Affected Software
Event History
Frequently Asked Questions
What is the vulnerability ID for this NETGEAR router authentication bypass?
The vulnerability ID for this NETGEAR router authentication bypass is CVE-2020-27866.
Which routers are affected by the NETGEAR router authentication bypass vulnerability?
The affected routers include NETGEAR R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R7450, JNR3210, WNR2020, Nighthawk AC2100, and Nighthawk AC2400.
How severe is the NETGEAR router authentication bypass vulnerability?
The severity of the NETGEAR router authentication bypass vulnerability is rated as high with a severity value of 8.8.
How can network-adjacent attackers exploit the NETGEAR router authentication bypass vulnerability?
Network-adjacent attackers can exploit the vulnerability by bypassing authentication on the affected installations.
What is the recommended action to fix the NETGEAR router authentication bypass vulnerability?
NETGEAR has released a security advisory with recommended steps to mitigate the vulnerability. Please refer to their official knowledge base article for more information.