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Vulnerabilities

Vulnerability · CVE-2019-18187

Trend Micro OfficeScan Directory Traversal Vulnerability

Published Oct 28, 2019 · catalog updated Jun 16, 2026 · Trend Micro OfficeScan

Patch now

CVE-2019-18187 is in the CISA known-exploited catalog, due May 3, 2022. Confirm Trend Micro OfficeScan against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
High7.5
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
25.12%
Remediation
Remediation guidance
Affected products
cpe trendmicro/officescan · vendor Trend Micro OfficeScan

Trend Micro OfficeScan versions 11.0 and XG (12.0) could be exploited by an attacker utilizing a directory traversal vulnerability to extract files from an arbitrary zip file to a specific folder on the OfficeScan server, which could potentially lead to remote code execution (RCE). The remote process execution is bound to a web service account, which depending on the web platform used may have restricted permissions. An attempted attack requires user authentication.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe trendmicro/officescan11.0
  • cpe trendmicro/officescanxg
  • vendor Trend Micro OfficeScanversion unspecified

How to fix CVE-2019-18187

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2019-18187 is in the CISA known-exploited catalog, due May 3, 2022. Confirm Trend Micro OfficeScan against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with 11.0, xg. Apply updates per vendor instructions.

What should an analyst verify?

CWE-22: Path Traversal. EPSS 25.12%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 28, 2019 · Catalog

    Detected

    Trend Micro OfficeScan versions 11.0 and XG (12.0) could be exploited by an attacker utilizing a directory traversal vulnerability to extract files from an arbitrary zip file to a specific folder on the OfficeScan server, which could potentially lead to remote code execution (RCE). The remote process execution is bound to a web service account, which depending on the web platform used may have res

  2. Nov 3, 2021 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. May 3, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    Trend Micro OfficeScan versions 11.0 and XG (12.0) could be exploited by an attacker utilizing a directory traversal vulnerability to extract files from an arbitrary zip file to a specific folder on the OfficeScan server, which could potentially lead to remote code execution (RCE). The remote process execution is bound to a web service account, which depending on the web platform used may have res

Sources

  • CISA KEVConfirmed exploitationCVE-2019-18187

    Trend Micro OfficeScan contains a directory traversal vulnerability by extracting files from a zip file to a specific folder on the OfficeScan server, leading to remote code execution.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2019-18187

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2019-18187

    30-day exploitation probability 25.1%

    first.org
  • NIST NVDVulnerability recordCVE-2019-18187

    Trend Micro OfficeScan versions 11.0 and XG (12.0) could be exploited by an attacker utilizing a directory traversal vulnerability to extract files from an arbitrary zip file to a specific folder on the OfficeScan server, which could potentially lead to remote code execution (RCE

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2019-18187

    Trend Micro OfficeScan contains a directory traversal vulnerability by extracting files from a zip file to a specific folder on the OfficeScan server, leading to remote code execution.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.