ACTIVELY EXPLOITED
CVE-2026-34926: Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability
| Vendor | Trend Micro |
|---|---|
| Product | Apex One |
| Actively exploited | Yes |
| Added to CISA KEV | 21 May 2026 |
| CISA federal deadline | 4 Jun 2026 |
| Weakness (CWE) | CWE-23 |
Required action (CISA's text)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Description (NVD)
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.
SOURCES
Other Trend Micro flaws
- CVE-2025-54948: Trend Micro Apex One OS Command Injection Vulnerability
- CVE-2023-41179: Trend Micro Apex One and Worry-Free Business Security Remote Code Execution Vulnerability
- CVE-2022-40139: Trend Micro Apex One and Apex One as a Service Improper Validation Vulnerability
- CVE-2022-26871: Trend Micro Apex Central Arbitrary File Upload Vulnerability
- CVE-2021-36742: Trend Micro Multiple Products Improper Input Validation Vulnerability
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.