What is the severity of CVE-2021-34980?

The severity of CVE-2021-34980 is high with a CVSS score of 8.8.

How does CVE-2021-34980 allow attackers to execute arbitrary code?

CVE-2021-34980 allows network-adjacent attackers to execute arbitrary code by exploiting a stack-based buffer overflow vulnerability in the setupwizard.cgi page of NETGEAR R6260 routers.

Is authentication required to exploit CVE-2021-34980?

No, authentication is not required to exploit CVE-2021-34980.

What is the affected software for CVE-2021-34980?

The affected software for CVE-2021-34980 is NETGEAR R6260 routers with firmware version 1.1.0.78_1.0.1.

How can I fix CVE-2021-34980?

To fix CVE-2021-34980, it is recommended to update the firmware of NETGEAR R6260 routers to a version that addresses the vulnerability.

Vulnerability/
CVE-2021-34980

high

8.8

CWE

787 121

13/1/2022

4/8/2024

CVE-2021-34980: NETGEAR R6260 setupwizard.cgi Stack-based Buffer Overflow Remote Code Execution Vulnerability

First published: Thu Jan 13 2022(Updated: )

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.

Credit: zdi-disclosures@trendmicro.com

Affected Software	Affected Version	How to fix
Netgear R6260 Firmware	=1.1.0.78_1.0.1
NETGEAR R6260

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-34980?
The severity of CVE-2021-34980 is high with a CVSS score of 8.8.
How does CVE-2021-34980 allow attackers to execute arbitrary code?
CVE-2021-34980 allows network-adjacent attackers to execute arbitrary code by exploiting a stack-based buffer overflow vulnerability in the setupwizard.cgi page of NETGEAR R6260 routers.
Is authentication required to exploit CVE-2021-34980?
No, authentication is not required to exploit CVE-2021-34980.
What is the affected software for CVE-2021-34980?
The affected software for CVE-2021-34980 is NETGEAR R6260 routers with firmware version 1.1.0.78_1.0.1.
How can I fix CVE-2021-34980?
To fix CVE-2021-34980, it is recommended to update the firmware of NETGEAR R6260 routers to a version that addresses the vulnerability.

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version/netgear r6260 firmware/1.1.0.78_1.0.1
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