CVE-2022-40139 Trend Micro Apex One and Apex One as a Service Improper Validation Vulnerability
Trend Micro Apex One and Apex One as a Service contain an improper validation of rollback mechanism components that could lead to remote code execution.
From the CISA KEV catalogue version 2026.11.06, with Cybergen analysis. Updated 6 Nov 2026.
Should You Worry?
- CISA confirmed exploitation in the wild and added it to the Known Exploited Vulnerabilities catalogue on 15 Sep 2022.
- Rated High severity (CVSS 7.2, scored by CISA).
- It has been in the catalogue for 1,513 days. Systems still unpatched now have almost certainly been scanned for it.
What It Is
Improper validation of some components used by the rollback mechanism in Trend Micro Apex One and Trend Micro Apex One as a Service clients could allow a Apex One server administrator to instruct affected clients to download an unverified rollback package, which could lead to remote code execution. Please note: an attacker must first obtain Apex One server administration console access in order to exploit this vulnerability.
Affected Versions
| Product | Versions |
|---|---|
| Trend Micro Trend Micro Apex One | 2019 (on-prem) and SaaS |
From the public CVE record, as supplied by the vendor. Always confirm against the vendor advisory.
What To Do Now
- 1
Find it
Search your asset inventory and external attack surface for Trend Micro Apex One and Apex One as a Service. Include cloud images, appliances and anything a supplier runs for you.
Attack Surface Management - 2
- 3
Hunt for compromise
If an affected system was reachable before you patched, assume it may have been hit. Check logs, new accounts, web shells and outbound connections from the date of exposure.
Incident Response - 4
Prove it is fixed
Rescan or test the system after patching. Upgrades that fail silently and forgotten secondary instances are common.
Penetration Testing
The Compliance Clock
General guidance, not legal advice. Your obligations depend on your sector, scope and jurisdiction.
Not Sure If You Are Exposed?
Our attack surface and vulnerability teams can check your internet-facing estate for CVE-2022-40139 and every other exploited flaw on the list.