HIGH

CVE-2018-15557

CVSS v3

8.8

HIGH

EPSS Score

3.3 %

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-2018-15557 yet.

Full record on NVD

Description

An issue was discovered in the Quantenna WiFi Controller on Telus Actiontec WEB6000Q v1.1.02.22 devices. An attacker can statically set his/her IP to anything on the 169.254.1.0/24 subnet, and obtain root access by connecting to 169.254.1.2 port 23 with telnet/netcat.

Technical details

Published: 2019-06-27

Frequently asked questions

What is CVE-2018-15557?

Is CVE-2018-15557 actively exploited?

Active exploitation of CVE-2018-15557 has not been confirmed. Its EPSS score was 3.3% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-15557?

CVE-2018-15557 has a CVSS v3 base score of 8.8 (HIGH severity).

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