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.
History

Thu, 17 Jul 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 16 Jul 2025 21:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Netcore / Netis Routers RCE via UDP Port 53413 Backdoor
Weaknesses CWE-306
CWE-78
CWE-912
References
Metrics cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2025-07-16T21:02:57.281Z

Updated: 2025-07-17T18:40:31.614Z

Reserved: 2025-04-15T19:15:22.561Z

Link: CVE-2025-34117

cve-icon Vulnrichment

Updated: 2025-07-17T18:39:18.893Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-07-16T21:15:26.550

Modified: 2025-07-17T21:15:50.197

Link: CVE-2025-34117

cve-icon Redhat

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