CVE-2020-8468 Trend Micro Multiple Products Content Validation Escape Vulnerability
Trend Micro Apex One, OfficeScan, and Worry-Free Business Security agents contain a content validation escape vulnerability that could allow an attacker to manipulate certain agent client components.
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 3 Nov 2021.
- Rated High severity (CVSS 8.8, scored by CISA).
- It has been in the catalogue for 1,829 days. Systems still unpatched now have almost certainly been scanned for it.
What It Is
Trend Micro Apex One (2019), OfficeScan XG and Worry-Free Business Security (9.0, 9.5, 10.0) agents are affected by a content validation escape vulnerability which could allow an attacker to manipulate certain agent client components. An attempted attack requires user authentication.
Affected Versions
| Product | Versions |
|---|---|
| Trend Micro Trend Micro OfficeScan, Trend Micro Apex One, Trend Micro Worry-Free Business Security (WFBS) | OfficeScan XG (12.0), Apex One 2019 (14.0), WFBS 9.0, 9.5 and 10.0 |
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, OfficeScan and Worry-Free Business Security Agents. 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
Vendor Advisories
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-2020-8468 and every other exploited flaw on the list.