HIGH

CVE-2017-18374

CVSS v3

8.8

HIGH

EPSS Score

5.5 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2017-18374 yet.

Full record on NVD

Description

The ZyXEL P660HN-T1A v1 TCLinux Fw $7.3.15.0 v001 / 3.40(ULM.0)b31 router distributed by TrueOnline has two user accounts with default passwords, including a hardcoded service account with the username true and password true. These accounts can be used to login to the web interface, exploit authenticated command injections and change router settings for malicious purposes.

Technical details

Published: 2019-05-02

Frequently asked questions

What is CVE-2017-18374?

Is CVE-2017-18374 actively exploited?

Active exploitation of CVE-2017-18374 has not been confirmed. Its EPSS score was 5.5% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2017-18374?

CVE-2017-18374 has a CVSS v3 base score of 8.8 (HIGH severity).

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