THREATPORT/VULNERABILITY/CVE-2019-19373
HIGH SEVERITY

CVE-2019-19373

Matrix vulnerability

CVSS
7.5
EPSS
4.8%
EPSS pct
91th
Exploited
No known
An issue was discovered in Squiz Matrix CMS 5.5.0 prior to 5.5.0.3, 5.5.1 prior to 5.5.1.8, 5.5.2 prior to 5.5.2.4, and 5.5.3 prior to 5.5.3.3 where a user can trigger arbitrary unserialization of a PHP object from a packages/cms/page_templates/page_remote_content/page_remote_content.inc POST parameter during processing of a Remote Content page type. This unserialization can be used to trigger the inclusion of arbitrary files on the filesystem (local file inclusion), and results in remote code execution.
Affected vendor
Squiz
Affected product
Matrix
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness type (CWE)
  • CWE-502 — Deserialization of Untrusted Data
Published
2019-12-11

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.

Its EPSS score of 4.8% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 91% of all scored CVEs.

Check your external exposure to CVE-2019-19373

  • Confirm whether Squiz Matrix is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2019-19373.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2019-19373

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2019-19373 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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