What is CVE-2018-17534?

CVE-2018-17534 is a medium-severity vulnerability in Teltonika Rut900, classified under Improper Authentication. CVSS score: 6.8/10. Published 2018-10-15.

How severe is CVE-2018-17534?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Auth bypass in Teltonika Rut900

CVE-2018-17534

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.

Vulnerability class: Broken Authentication

Published 2018-10-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (52.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

seclists.org/fulldisclosure/2018/Oct/28 (mailing-list, Exploit, Mailing List, Third Party Advisory)
packetstormsecurity.com/files/149779/Teltonika-RUT9XX-Missing-Access-Control-To… (Exploit, VDB Entry, Third Party Advisory)
github.com/sbaresearch/advisories/tree/public/2018/SBA-ADV-20180319-02_Teltonik… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-17534?: CVE-2018-17534 is a medium-severity vulnerability in Teltonika Rut900, classified under Improper Authentication. CVSS score: 6.8/10. Published 2018-10-15.
How severe is CVE-2018-17534?: Medium severity. CVSS v3 base score is 6.8 out of 10.