How severe is CVE-2019-18187?

CVE-2019-18187 has a CVSS 3.1 base score of 8.8 (HIGH). EPSS estimates a 25.1% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2019-18187: Trend Micro OfficeScan Directory Traversal

CISA Known Exploited Vulnerabilities

Trend Micro OfficeScan Directory Traversal Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2021-11-03

Remediation due

2022-05-03

Required action
Apply updates per vendor instructions.

CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2019-18187

Description

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.

Severity

CVSS 3.1 · CISA8.8 HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC · CISA-ADP

Exploitationactive

Automatableno

Technical impacttotal

Exploitation Context

as of October 13, 2026

All KEV statistics→

CISA added CVE-2019-18187 to the KEV catalog 737 days after its CVE record was published.
It is one of 12 Trend Micro entries in the CISA KEV catalog, and one of 7 added in 2021.
Its current EPSS score (25.1%) is higher than that of 39% of CISA KEV entries.

Affected Products

Vendor	Product	Affected versions
Trend Micro	Trend Micro Trend Micro OfficeScan	Version 11.0, XG (12.0)

References

1 Links

Other references

https://success.trendmicro.com/solution/000151730

Record Details

Published

2019-10-28

Last updated

2025-10-29

Assigner (CNA)

trendmicro

Credited to

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CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.