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

19/1/2022

21/10/2023

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 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.

Credit: zdi-disclosures@trendmicro.com

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

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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.

collector/zdi-advisory
alias/ZDI-21-1242
alias/ZDI-CAN-14107
alias/CVE-2021-34980
collector/nvd-index
agent/references
agent/weakness
agent/title
agent/author
agent/severity
agent/tags
agent/type
agent/description
agent/event
agent/softwarecombine
agent/first-publish-date
vendor/netgear
canonical/netgear r6260
canonical/netgear r6260 firmware
version/netgear r6260 firmware/1.1.0.78_1.0.1

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