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CVE-2020-8599: Trend Micro Apex One and OfficeScan Authentication Bypass Vulnerability

criticalknown exploitedCVE-2020-8599
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
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.

CSIRTS triage

vendor: Trend Microproduct: Apex One and OfficeScanAuthentication bypass
What
A vulnerability allows remote attackers to bypass authentication and write data to a path on affected installations.
Who is affected
Customers using Trend Micro Apex One and OfficeScan are affected.
Urgency
Remediation is critical as the vulnerability is actively exploited.
Action
Update to the latest version of Apex One and OfficeScan.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2021-11-03
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2020-8599

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2020-8599coverage & exploitation statusNVD · CVE.org

Recent advisories for Trend Micro Apex

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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