How to check if you are exposed to CVE-2019-18187
- Find every Trend Micro OfficeScan system you or your clients run, including ones exposed to the internet. Those come first: CISA only lists flaws attackers are already using.
- Compare each version with the fixed versions in the vendor advisory. Where no fix exists yet, apply the vendor’s mitigation or take the system off the internet.
- Run a credentialed vulnerability scan to catch the systems you missed, then check that the next scan no longer reports CVE-2019-18187.
US federal agencies had to fix this by 2022-05-03. Everyone else should treat that deadline as a guide: if it has passed, this is overdue.
Affected versions
Versions the National Vulnerability Database lists as vulnerable to CVE-2019-18187. Check the vendor advisory for the exact fixed builds before you sign anything off.
| Product | Vulnerable versions |
|---|---|
| Trend Micro Officescan | 11.0-sp1; xg; xg-sp1 |
Timeline
- · Published in the National Vulnerability Database
- · Added to CISA's Known Exploited Vulnerabilities catalog, 737 days after it was published
- · Fix-by date for US federal agencies, passed 1,643 days ago
Weakness type
More exploited Trend Micro vulnerabilities
CISA lists 12 exploited Trend Micro vulnerabilities. The closest matches:
- CVE-2026-34926Trend Micro Apex One (On-Premise) Directory Traversal VulnerabilityAdded 2026-05-21
- CVE-2025-54948Trend Micro Apex One OS Command Injection VulnerabilityAdded 2025-08-18
- CVE-2023-41179Trend Micro Apex One and Worry-Free Business Security Remote Code Execution VulnerabilityAdded 2023-09-21
- CVE-2022-40139Trend Micro Apex One and Apex One as a Service Improper Validation VulnerabilityAdded 2022-09-15
- CVE-2022-26871Trend Micro Apex Central Arbitrary File Upload VulnerabilityAdded 2022-03-31
- CVE-2021-36742Trend Micro Multiple Products Improper Input Validation VulnerabilityAdded 2021-11-03
- CVE-2021-36741Trend Micro Multiple Products Improper Input Validation VulnerabilityAdded 2021-11-03
- CVE-2020-8599Trend Micro Apex One and OfficeScan Authentication Bypass VulnerabilityAdded 2021-11-03
Keep going
Sources: CISA Known Exploited Vulnerabilities catalog (version 2026.10.30); EPSS data from FIRST.org; CVSS and descriptions from the NIST National Vulnerability Database. Checked 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.