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TI-2025-24277 Aliases CVE-2025-34117GHSA-86xp-hg9p-72mv

Netcore / Netis Routers RCE via UDP Port 53413 Backdoor

Priority HIGH 81CWE-306Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass, Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306 and CWE-78.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.2077 97th percentileScored 2026-11-07
Public exploit Yes 3 exploit referencesTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Netcore TechnologyRouter firmwarePrior to August 2014 and later—No fix listedCNA
NetisRouter firmwarePrior to August 2014 and later—No fix listedCNA
  • Router firmware VendorNetcore Technology Affected Prior to August 2014 and later Fixed in — No fix listed CNA
  • Router firmware VendorNetis Affected Prior to August 2014 and later Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-34117
  2. 2026-10-03 Alias added: GHSA-86xp-hg9p-72mv

References

Exploit 3

Advisory 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences