THREATPORT/VULNERABILITY/CVE-2018-15556
CRITICAL SEVERITY

CVE-2018-15556

Web6000q Firmware vulnerability

CVSS
9.8
EPSS
3.3%
EPSS pct
87th
Exploited
No known
The Quantenna WiFi Controller on Telus Actiontec WEB6000Q v1.1.02.22 allows login with root level access with the user "root" and an empty password by using the enabled onboard UART headers.
Affected vendor
Actiontec
Affected product
Web6000q Firmware
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
  • CWE-287 — Improper Authentication
Published
2019-06-27

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 3.3% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 87% of all scored CVEs.

Check your external exposure to CVE-2018-15556

  • Confirm whether Actiontec Web6000q Firmware is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2018-15556.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-15556

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2018-15556 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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