CVE-2025-34117

UNKNOWN

Published Unknown

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No CVSS data available

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

EU Vulnerability Database

Monitored by ENISA for EU cybersecurity

EU Coordination

EU Coordinated

Exploitation Status

No Known Exploitation

EUVD ID

View on ENISA

ENISA Analysis

Affected Products (ENISA)

netcore technology

router firmware

ENISA Scoring

CVSS Score (4.0)

9.3

/10

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

EPSS Score

0.760

probability

ENISA References

https://web.archive.org/web/20140828114943/http://blog.trendmicro.com/trendlabs-security-intelligence/netis-routers-leave-wide-open-backdoor/

https://www.seebug.org/vuldb/ssvid-90227

https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/linux/misc/netcore_udp_53413_backdoor.rb

https://www.shadowserver.org/what-we-do/network-reporting/netcore-netis-router-vulnerability-scan-report/

https://vulners.com/metasploit/MSF:EXPLOIT-LINUX-MISC-NETCORE_UDP_53413_BACKDOOR-

https://www.vulncheck.com/advisories/netcore-netis-routers-backdoor-rce

https://www.exploit-db.com/exploits/43387

Data provided by ENISA EU Vulnerability Database. Last updated: July 17, 2025

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed CRITICAL

GHSA-86xp-hg9p-72mv

Advisory Details

CVSS Scoring

CVSS Score

9.0

CVSS 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/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

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2025-34117

WEB https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/linux/misc/netcore_udp_53413_backdoor.rb

WEB https://vulners.com/metasploit/MSF:EXPLOIT-LINUX-MISC-NETCORE_UDP_53413_BACKDOOR-

WEB https://web.archive.org/web/20140828114943/http://blog.trendmicro.com/trendlabs-security-intelligence/netis-routers-leave-wide-open-backdoor

WEB https://www.exploit-db.com/exploits/43387

WEB https://www.seebug.org/vuldb/ssvid-90227

WEB https://www.shadowserver.org/what-we-do/network-reporting/netcore-netis-router-vulnerability-scan-report

WEB https://www.vulncheck.com/advisories/netcore-netis-routers-backdoor-rce

Advisory provided by GitHub Security Advisory Database. Published: July 16, 2025, Modified: July 16, 2025

Published: Unknown

Last Modified: Unknown

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