Trend Micro Apex One Multiple High-Severity Vulnerabilities Advisory (CVE-2026-34926 etc.)

Vulnerability Summary: Multiple High-Severity Vulnerabilities in TrendAI™ Apex One Series Vulnerability Overview On May 21, 2026, Trend Micro released a security advisory confirming the presence of multiple high-severity vulnerabilities in TrendAI™ Apex One series products. Among these, CVE-2026-34926 has been confirmed as actively exploited in the wild. The remaining vulnerabilities primarily involve Privilege Escalation and Missing Authentication issues. Impact Scope Affected products include: TrendAI™ Apex One Trend Micro Apex One as a Service TrendAI Vision One™ Endpoint Security - Standard Endpoint Protection Vulnerability Details Table Remediation 1. For CVE-2026-34926 (Directory Traversal) Applicable Versions: Only applicable to Apex One Cloud Version Prerequisites: The attacker must have OS administrator privileges on the Apex One server Recommendation: Apply the following patch as soon as possible 2. For Other Vulnerabilities (Privilege Escalation / ToCToU) Affected Products: Apex One and Standard Endpoint Protection agents Risk: Local attackers may perform privilege escalation or execute malicious code Recommendation: Run code with least privileges on affected systems 3. Specific Patch Versions 4. Important Notes The patch was originally planned to be released via CP17079; however, due to delays in issue confirmation, CP 18012 is now being used as an emergency patch. Environments with CP17079 applied and new installations of Service Pack 1 2025 (Build 17079) are already protected. Customers are advised to update to the latest build version as soon as possible. 5. Mitigation Measures Restrict local access to the agent program Allow agent access only from trusted networks Regularly update agents to the latest version --- Release Date: May 21, 2026 (Friday) at 11:00 AM Article ID: KA-0022974

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Trend Micro Apex One Multiple High-Severity Vulnerabilities Advisory (CVE-2026-34926 etc.)