What is the severity of ZDI-CAN-13313?

ZDI-CAN-13313 has a critical severity level due to its ability to allow unauthenticated access for network-adjacent attackers.

How do I fix ZDI-CAN-13313?

To fix ZDI-CAN-13313, it is recommended to update the firmware of the affected NETGEAR routers to the latest version provided by the vendor.

Which NETGEAR products are affected by ZDI-CAN-13313?

ZDI-CAN-13313 affects multiple NETGEAR routers that utilize the mini_httpd service on TCP port 80.

Can remote attackers exploit ZDI-CAN-13313?

No, remote attackers cannot exploit ZDI-CAN-13313 as it requires an attacker to be on the same network as the affected device.

What impact does ZDI-CAN-13313 have on system security?

ZDI-CAN-13313 allows attackers to bypass authentication, potentially leading to unauthorized access and control of the affected routers.

Vulnerability/
ZDI-CAN-13313

high

8.8

23/2/2025

ZDI-CAN-13313: NETGEAR Multiple Routers mini_httpd Authentication Bypass Vulnerability

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of multiple NETGEAR 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 incorrect string matching logic when accessing protected pages. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root.

Affected Software	Affected Version	How to fix
NETGEAR Multiple Devices

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Frequently Asked Questions

What is the severity of ZDI-CAN-13313?
ZDI-CAN-13313 has a critical severity level due to its ability to allow unauthenticated access for network-adjacent attackers.
How do I fix ZDI-CAN-13313?
To fix ZDI-CAN-13313, it is recommended to update the firmware of the affected NETGEAR routers to the latest version provided by the vendor.
Which NETGEAR products are affected by ZDI-CAN-13313?
ZDI-CAN-13313 affects multiple NETGEAR routers that utilize the mini_httpd service on TCP port 80.
Can remote attackers exploit ZDI-CAN-13313?
No, remote attackers cannot exploit ZDI-CAN-13313 as it requires an attacker to be on the same network as the affected device.
What impact does ZDI-CAN-13313 have on system security?
ZDI-CAN-13313 allows attackers to bypass authentication, potentially leading to unauthorized access and control of the affected routers.

agent/references
agent/softwarecombine
agent/severity
agent/title
agent/event
agent/type
agent/description
agent/source
agent/tags
collector/zdi-advisory
source/ZDI
alias/ZDI-21-1051
alias/ZDI-CAN-13313
alias/CVE-2021-34865
agent/software-canonical-lookup
agent/software-canonical-lookup-request
vendor/netgear
canonical/netgear multiple devices

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Frequently Asked Questions

What is the severity of ZDI-CAN-13313?
ZDI-CAN-13313 has a critical severity level due to its ability to allow unauthenticated access for network-adjacent attackers.
How do I fix ZDI-CAN-13313?
To fix ZDI-CAN-13313, it is recommended to update the firmware of the affected NETGEAR routers to the latest version provided by the vendor.
Which NETGEAR products are affected by ZDI-CAN-13313?
ZDI-CAN-13313 affects multiple NETGEAR routers that utilize the mini_httpd service on TCP port 80.
Can remote attackers exploit ZDI-CAN-13313?
No, remote attackers cannot exploit ZDI-CAN-13313 as it requires an attacker to be on the same network as the affected device.
What impact does ZDI-CAN-13313 have on system security?
ZDI-CAN-13313 allows attackers to bypass authentication, potentially leading to unauthorized access and control of the affected routers.