- 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.
- Source
- disclosure@vulncheck.com
- NVD status
- Deferred
CVSS 4.0
- Type
- Secondary
- Base score
- 9.3
- Impact score
- -
- Exploitability score
- -
- Vector string
- 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity
- CRITICAL
- disclosure@vulncheck.com
- CWE-78
- Hype score
- Not currently trending
🚨 ¡Alerta Crítica: Backdoor en Routers Netis y Netcore! 🚨📡 Se ha reactivado la alerta sobre una vulnerabilidad crítica (CVE-2025-34117) que afecta a múltiples modelos de routers de las marcas Netis y Netcore. El fallo es, en esencia, una "puerta trasera" (backdoor)
@MineryReport
22 Dec 2025
67 Impressions
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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 undocu… https://t.co/jtzyO6Xa6L
@CVEnew
16 Jul 2025
576 Impressions
0 Retweets
1 Like
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0 Quotes