What is the severity of ZDI-CAN-15883?

The severity of ZDI-CAN-15883 is considered high due to the potential for privilege escalation.

How do I fix ZDI-CAN-15883?

To fix ZDI-CAN-15883, you should update the Cisco RV340 router firmware to the latest version provided by Cisco.

Who is affected by ZDI-CAN-15883?

ZDI-CAN-15883 affects installations of Cisco RV340 routers that have the vulnerable firmware version.

Can ZDI-CAN-15883 be exploited remotely?

ZDI-CAN-15883 cannot be exploited remotely as it requires network adjacency for attack.

Is authentication required for exploiting ZDI-CAN-15883?

Yes, authentication is required to exploit ZDI-CAN-15883, but the existing mechanism can be bypassed.

Vulnerability/
ZDI-CAN-15883

medium

4.3

2/2/2025

ZDI-CAN-15883: (Pwn2Own) Cisco RV340 upload.cgi JSON Command Injection Privilege Escalation Vulnerability

This vulnerability allows network-adjacent attackers to escalate privileges on affected installations of Cisco RV340 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the handling of POST request parameters provided to the upload.cgi endpoint. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the www-data user.

Affected Software	Affected Version	How to fix
Cisco RV340W Firmware

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Reference Links

Frequently Asked Questions

What is the severity of ZDI-CAN-15883?
The severity of ZDI-CAN-15883 is considered high due to the potential for privilege escalation.
How do I fix ZDI-CAN-15883?
To fix ZDI-CAN-15883, you should update the Cisco RV340 router firmware to the latest version provided by Cisco.
Who is affected by ZDI-CAN-15883?
ZDI-CAN-15883 affects installations of Cisco RV340 routers that have the vulnerable firmware version.
Can ZDI-CAN-15883 be exploited remotely?
ZDI-CAN-15883 cannot be exploited remotely as it requires network adjacency for attack.
Is authentication required for exploiting ZDI-CAN-15883?
Yes, authentication is required to exploit ZDI-CAN-15883, but the existing mechanism can be bypassed.

agent/references
agent/softwarecombine
agent/title
agent/severity
agent/type
agent/description
agent/source
agent/tags
collector/zdi-advisory
source/ZDI
alias/ZDI-22-411
alias/ZDI-CAN-15883
alias/CVE-2022-20707
agent/software-canonical-lookup
agent/software-canonical-lookup-request
agent/event
vendor/cisco
canonical/cisco rv340w firmware

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