THREATPORT/VULNERABILITY/CVE-2023-0587
CRITICAL SEVERITY

CVE-2023-0587

Apex One vulnerability

CVSS
9.1
EPSS
59.6%
EPSS pct
99th
Exploited
No known
A file upload vulnerability in exists in Trend Micro Apex One server build 11110. Using a malformed Content-Length header in an HTTP PUT message sent to URL /officescan/console/html/cgi/fcgiOfcDDA.exe, an unauthenticated remote attacker can upload arbitrary files to the SampleSubmission directory (i.e., \PCCSRV\TEMP\SampleSubmission) on the server. The attacker can upload a large number of large files to fill up the file system on which the Apex One server is installed.
Affected vendor
Trendmicro
Affected product
Apex One
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Weakness type (CWE)
  • CWE-434 — Unrestricted Upload of File with Dangerous Type
Published
2023-02-01

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 integrity, high impact to availability.

Its EPSS score of 59.6% reflects a high probability of exploitation activity in the wild over the next 30 days, placing it among the most exploited CVEs currently tracked.

Check your external exposure to CVE-2023-0587

  • Confirm whether Trendmicro Apex One is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2023-0587.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2023-0587

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