What is the vulnerability ID?

The vulnerability ID is CVE-2020-27872.

What is the severity of CVE-2020-27872?

The severity of CVE-2020-27872 is high with a severity value of 8.8.

Which products are affected by CVE-2020-27872?

NETGEAR R7450 routers running firmware version 1.2.0.62_1.0.1 are affected by CVE-2020-27872.

Is authentication required to exploit CVE-2020-27872?

No, authentication is not required to exploit CVE-2020-27872.

How can I fix CVE-2020-27872?

NETGEAR has released a security advisory with instructions on how to mitigate the password recovery vulnerabilities. Please refer to the official NETGEAR advisory for guidance.

Vulnerability/
CVE-2020-27872

high

8.8

CWE

668 642

4/2/2021

8/2/2021

21/10/2023

CVE-2020-27872: NETGEAR R7450 Password Recovery External Control of Critical State Data Authentication Bypass Vulnerability

First published: Thu Feb 04 2021(Updated: )

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R7450 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the mini_httpd service, which listens on TCP port 80 by default. The issue results from improper state tracking in the password recovery process. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root.

Credit: zdi-disclosures@trendmicro.com

Affected Software	Affected Version	How to fix
NETGEAR R7450
Netgear Ac2100 Firmware	<1.2.0.76
Netgear Ac2100
Netgear Ac2400 Firmware	<1.2.0.76
Netgear Ac2400
Netgear Ac2600 Firmware	<1.2.0.76
Netgear Ac2600
Netgear R6700 Firmware	<1.2.0.76
NETGEAR R6700	=v2
Netgear R6800 Firmware	<1.2.0.76
Netgear R6800
Netgear R6900 Firmware	<1.2.0.76
Netgear R6900	=v2
Netgear R7200 Firmware	<1.2.0.76
Netgear R7200
Netgear R7350 Firmware	<1.2.0.76
Netgear R7350
Netgear R7400 Firmware	<1.2.0.76
Netgear R7400
Netgear R7450 Firmware	<1.2.0.76
NETGEAR R7450
Netgear R6220 Firmware	<1.1.0.104
NETGEAR R6220
Netgear R6230 Firmware	<1.1.0.104
Netgear R6230
Netgear R6260 Firmware	<1.1.0.78
NETGEAR R6260
Netgear R6330 Firmware	<1.1.0.78
Netgear R6330
Netgear R6350 Firmware	<1.1.0.78
Netgear R6350
Netgear R6850 Firmware	<1.1.0.78
Netgear R6850
Netgear R6120 Firmware	<1.0.0.76
NETGEAR R6120
Netgear R6020 Firmware	<1.0.0.48
NETGEAR R6020
Netgear R6080 Firmware	<1.0.0.48
Netgear R6080

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Reference Links

Frequently Asked Questions

What is the vulnerability ID?
The vulnerability ID is CVE-2020-27872.
What is the severity of CVE-2020-27872?
The severity of CVE-2020-27872 is high with a severity value of 8.8.
Which products are affected by CVE-2020-27872?
NETGEAR R7450 routers running firmware version 1.2.0.62_1.0.1 are affected by CVE-2020-27872.
Is authentication required to exploit CVE-2020-27872?
No, authentication is not required to exploit CVE-2020-27872.
How can I fix CVE-2020-27872?
NETGEAR has released a security advisory with instructions on how to mitigate the password recovery vulnerabilities. Please refer to the official NETGEAR advisory for guidance.