CVE-2023-41179: Trend Micro Apex One and Worry-Free Business Security Remote Code Execution Vulnerability

How to check if you are exposed to CVE-2023-41179

1. Find every Trend Micro Apex One and Worry-Free Business Security system you or your clients run, including ones exposed to the internet. Those come first: CISA only lists flaws attackers are already using.
2. Compare each version with the fixed versions in the vendor advisory below. Where no fix exists yet, apply the vendor’s mitigation or take the system off the internet.
3. Run a credentialed vulnerability scan to catch the systems you missed, then check that the next scan no longer reports CVE-2023-41179.

US federal agencies had to fix this by 2023-10-12. Everyone else should treat that deadline as a guide: if it has passed, this is overdue.

Timeline

1. 2023-09-21 · Added to CISA's Known Exploited Vulnerabilities catalog
2. 2023-10-12 · Fix-by date for US federal agencies, passed 1,116 days ago

Vendor advisories and fixes

• https://success.trendmicro.com/dcx/s/solution/000294994?language=en_US

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-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
• CVE-2020-8468Trend Micro Multiple Products Content Validation Escape VulnerabilityAdded 2021-11-03

Keep going

• All exploited CVEs
• Check another CVE
• What is CISA KEV?
• What is EPSS?

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.