CVE-2026-34926—Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability

Vulnerability Name

Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability

Description

Trend Micro Apex One (on-premise) contains a directory traversal vulnerability that could allow a pre-authenticated local attacker to modify a key table on the server to inject malicious code to deploy to agents on affected installations.

Known To Be Used in Ransomware Campaigns?

Ransomware Status:

Unknown

Action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Additional Notes

• https://success.trendmicro.com/en-US/solution/KA-0023430
• https://nvd.nist.gov/vuln/detail/CVE-2026-34926

Related News Articles

• Trend Micro warns of Apex One zero-day exploited in the wildMay 22, 2026
• CISA Adds Exploited Langflow and Trend Micro Apex One Vulnerabilities to KEVMay 22, 2026

Related Weaknesses

• CWE-23