What’s Vulnerable › Vulnerabilities

CVE-2018-17534

• Severity: medium (CVSS 6.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-10-15 · updated 2026-06-17
• Weakness: CWE-287

Description

Teltonika RUT9XX routers with firmware before 00.04.233 provide a root terminal on a serial interface without proper access control. This allows attackers with physical access to execute arbitrary commands with root privileges.

Affected products

• Teltonika Rut900 Firmware: before 00.04.233 — fixed in 00.04.233
• Teltonika Rut950 Firmware: before 00.04.233 — fixed in 00.04.233
• Teltonika Rut955 Firmware: before 00.04.233 — fixed in 00.04.233

How to fix

Upgrade to a fixed version: Teltonika Rut900 Firmware 00.04.233; Teltonika Rut950 Firmware 00.04.233; Teltonika Rut955 Firmware 00.04.233. Check the vendor advisory for mitigations.

References

• http://packetstormsecurity.com/files/149779/Teltonika-RUT9XX-Missing-Access-Control-To-UART-Root-Terminal.html
• http://seclists.org/fulldisclosure/2018/Oct/28
• https://github.com/sbaresearch/advisories/tree/public/2018/SBA-ADV-20180319-02_Teltonika_Incorrect_Access_Control
• http://packetstormsecurity.com/files/149779/Teltonika-RUT9XX-Missing-Access-Control-To-UART-Root-Terminal.html
• http://seclists.org/fulldisclosure/2018/Oct/28
• https://github.com/sbaresearch/advisories/tree/public/2018/SBA-ADV-20180319-02_Teltonika_Incorrect_Access_Control

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