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.
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Thu, 17 Jul 2025 19:15:00 +0000
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Wed, 16 Jul 2025 21:15:00 +0000
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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 |
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cvssV4_0
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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

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

Status : Awaiting Analysis
Published: 2025-07-16T21:15:26.550
Modified: 2025-07-17T21:15:50.197
Link: CVE-2025-34117

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