CVE-2025-34117

A remote code execution vulnerability exists in multiple Netcore and Netis routers models with firmware released prior to August 2014 due to the presence of an undocumented backdoor listener on UDP port 53413. Exact version boundaries remain undocumented. An unauthenticated remote attacker can send specially crafted UDP packets to execute arbitrary commands on the affected device. This backdoor uses a hardcoded authentication mechanism and accepts shell commands post-authentication. Some device models include a non-standard implementation of the `echo` command, which may affect exploitability.

CVSS

No CVSS.

References

Link	Resource
https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/linux/misc/netcore_udp_53413_backdoor.rb
https://vulners.com/metasploit/MSF:EXPLOIT-LINUX-MISC-NETCORE_UDP_53413_BACKDOOR-
https://web.archive.org/web/20140828114943/http://blog.trendmicro.com/trendlabs-security-intelligence/netis-routers-leave-wide-open-backdoor/
https://www.exploit-db.com/exploits/43387
https://www.seebug.org/vuldb/ssvid-90227
https://www.shadowserver.org/what-we-do/network-reporting/netcore-netis-router-vulnerability-scan-report/
https://www.vulncheck.com/advisories/netcore-netis-routers-backdoor-rce

Configurations

No configuration.

History

No history.

Information

Published : 2025-07-16 21:15

Updated : 2025-07-17 21:15

NVD link : CVE-2025-34117

Mitre link : CVE-2025-34117

CVE.ORG link : CVE-2025-34117

JSON object : View

Products Affected

No product.

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CWE-306

Missing Authentication for Critical Function

CWE-912

Hidden Functionality

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