Trend Micro security advisory (AV26-494) – Update 1

Serial number: AV26-494
Date: May 21, 2026

On May 21, 2026, Trend Micro published a security advisory to address vulnerabilities in the following products:

• Apex One (on-premise) – server/agent builds prior to 2019 (on-prem) build 17079
• Apex One as a service – SaaS
• Trend Vision One Endpoint - SEP – agent builds prior to 14.0.20731

Update 1

On May 21, 2026, Cybersecurity and Infrastructure Security Agency (CISA) added CVE-2026-34926 to their Known Exploited Vulnerabilities (KEV) Database.

The Cyber Centre encourages users and administrators to review the provided web links and apply the necessary updates.

• ITW SECURITY BULLETIN: Apex One and Vision One – Standard Endpoint Protection (SEP) May 2026 Security Bulletin
• Trend Micro Business Success Vulnerability Response
• CISA KEV: CVE-2026-34926