Apex One and Apex Central

CVE-2020-8599: Apex One and OfficeScan Authentication Bypass

Trend Micro Apex One (2019) and OfficeScan XG server contain a vulnerable EXE file that could allow a remote attacker to write arbitrary data to an arbitrary path on affected installations and bypass ROOT login.

Published

ExploitedYes, in CISA KEVAdded 3 Nov 2021
Ransomware useNot reportedPer CISA
SeverityCRITICALCVSS 3.1 9.8
EPSS12%Chance of exploitation in 30 days
Public exploitNot tracked
FixSee advisory

Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.

Affected and fixed versions

Product / branchFixed in
Trend Micro OfficeScan, Trend Micro Apex One OfficeScan XG (12.0), Apex One 2019 (14See the advisory

Always confirm against the vendor advisory, which lists every fixed hotfix.

What it is

Trend Micro Apex One (2019) and OfficeScan XG server contain a vulnerable EXE file that could allow a remote attacker to write arbitrary data to an arbitrary path on affected installations and bypass ROOT login. Authentication is not required to exploit this vulnerability.

Exploitation

CISA lists this CVE as exploited in the wild since 3 Nov 2021.

Sources

KEV status, EPSS score and vendor data refreshed automatically, last on 12 Oct 2026.

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