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    CVE-2020-8599

    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.

    Published:Mar 18, 2020
    Last Modified:Oct 31, 2025
    EPS:Mar 18, 2020
    EPSS Score:0.67944
    CVSS Score:9.8

    CISA Notification

    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.

    Required Action:

    Apply updates per vendor instructions.

    Notes:

    No extra notes provided.

    Due Date
    May 3, 2022
    1592 days ago
    Alert Date
    Nov 3, 2021
    1773 days ago

    Affected Products

    Vendor
    Trendmicro
    Product
    Apex One
    Vendor
    Trendmicro
    Product
    Officescan

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-45208 (CVSS 7.8) — A time-of-check time-of-use vulnerability in the Apex One/SEP agent could allow a local attacker to escalate p…
    CVE-2026-45207 (CVSS 7.8) — An origin validation vulnerability in the Apex One/SEP agent could allow a local attacker to escalate privileg…
    CVE-2026-45206 (CVSS 7.8) — An origin validation vulnerability in the Apex One/SEP agent could allow a local attacker to escalate privileg…
    CVE-2026-34930 (CVSS 7.8) — An origin validation vulnerability in the Apex One/SEP agent could allow a local attacker to escalate privileg…
    CVE-2026-34929 (CVSS 7.8) — An origin validation vulnerability in the Apex One/SEP agent could allow a local attacker to escalate privileg…
    CVE-2026-34928 (CVSS 7.8) — An origin validation vulnerability in the Apex One/SEP agent could allow a local attacker to escalate privileg…
    CVE-2026-34927 (CVSS 7.8) — An origin validation vulnerability in the Apex One/SEP agent could allow a local attacker to escalate privileg…
    CVE-2026-34926 (CVSS 6.7) — A directory traversal vulnerability in the Apex One (on-premise) server could allow a pre-authenticated local …
    CVE-2025-71217 (CVSS 7.8) — An origin validation error vulnerability in the Trend Micro Apex One (mac) agent self-protection mechanism cou…
    CVE-2025-71216 (CVSS 7.8) — A time-of-check time-of-use vulnerability in the Trend Micro Apex One (mac) agent cache mechanism could allow …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High