What is the severity of ZDI-20-704?

The severity of ZDI-20-704 is considered high due to its potential to allow unauthorized access to NETGEAR R6700 routers.

How can I fix ZDI-20-704?

To fix ZDI-20-704, update your NETGEAR R6700 router to the latest firmware provided by NETGEAR.

Who is affected by ZDI-20-704?

ZDI-20-704 affects users of NETGEAR R6700 routers running vulnerable firmware versions.

What type of attack is ZDI-20-704 associated with?

ZDI-20-704 is associated with a network-adjacent attack that can bypass authentication on the affected routers.

Is authentication required to exploit ZDI-20-704?

While authentication is required to exploit ZDI-20-704, the vulnerability allows for this authentication to be bypassed.

Vulnerability/
ZDI-20-704

high

8.8

2/2/2025

ZDI-20-704: (0Day) (Pwn2Own) NETGEAR R6700 UPnP NewBlockSiteName Stack-based Buffer Overflow Remote Code Execution Vulnerability

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6700 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the UPnP service, which listens on TCP port 5000 by default. The issue results from the lack of proper validation of 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.

Affected Software	Affected Version	How to fix
NETGEAR R6700v1 firmware

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Reference Links

https://www.zerodayinitiative.com/advisories/ZDI-20-704/

Frequently Asked Questions

What is the severity of ZDI-20-704?
The severity of ZDI-20-704 is considered high due to its potential to allow unauthorized access to NETGEAR R6700 routers.
How can I fix ZDI-20-704?
To fix ZDI-20-704, update your NETGEAR R6700 router to the latest firmware provided by NETGEAR.
Who is affected by ZDI-20-704?
ZDI-20-704 affects users of NETGEAR R6700 routers running vulnerable firmware versions.
What type of attack is ZDI-20-704 associated with?
ZDI-20-704 is associated with a network-adjacent attack that can bypass authentication on the affected routers.
Is authentication required to exploit ZDI-20-704?
While authentication is required to exploit ZDI-20-704, the vulnerability allows for this authentication to be bypassed.

agent/title
agent/type
agent/severity
agent/references
agent/softwarecombine
agent/tags
collector/zdi-advisory
alias/ZDI-20-704
alias/ZDI-CAN-9643
alias/CVE-2020-10924
agent/software-canonical-lookup-request
agent/event
agent/description
vendor/netgear
canonical/netgear r6700v1 firmware

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