Vulnerability Intelligence Report
Netcore / Netis Routers RCE via UDP Port 53413 Backdoor
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.
No Active Exploit Signals
CVSS Base Score
9.3
CRITICAL
EPSS Probability:22.92%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
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Weaponization
—
SSVC Action
—
Weaknesses (CWE)
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Netcore Technology | Router firmware | Prior to August 2014 (affected) |
| Netis | Router firmware | Prior to August 2014 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
22.922%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | VulnCheck · Bug Bounty Provider · USA |
| Reserved | 2025-04-15T19:15:22 |
| Published | 2025-07-16T21:02:57 |
| Patch Date | 2016-12-15 |
| Last Updated | 2026-04-07T14:09:41 |
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