What’s Vulnerable › Vulnerabilities

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

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2021-11-03
• EPSS: 11.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-03-18 · updated 2026-06-17

Description

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.

Affected products

• Trend Micro Apex One: 2019
• Trend Micro OfficeScan: xg, xg-sp1

References

• https://success.trendmicro.com/jp/solution/000244253
• https://success.trendmicro.com/solution/000245571
• https://success.trendmicro.com/jp/solution/000244253
• https://success.trendmicro.com/solution/000245571
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-8599

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