Trend Micro Apex One and OfficeScan Authentication Bypass Vulnerability

Added to KEV
2021-11-03
Federal due date
2022-05-03
Vendor
Trend Micro
Product
Apex One and OfficeScan
EPSS
98.2th percentile (score 0.579, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2020-8599

CISA short description

Trend Micro Apex One and OfficeScan server contain a vulnerable EXE file that could allow a remote attacker to write data to a path on affected installations and bypass root login.

Required action

Apply updates per vendor instructions.

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.