Actively exploited in the wild
Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability
Trend Micro - Apex One · Listed in the CISA KEV since 2026-05-21. This indicates confirmed attacks in production environments.
Required 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.
CVE-2026-34926
MediumCVSS 6.7KEVExploitation Probability (EPSS)
Very high risk96th percentile - higher than 96% of all known CVEs
Summary
A directory traversal vulnerability in the Apex One (on-premise) server could allow a pre-authenticated local attacker to modify a key table on the server to inject malicious code to deploy to agents. The attack requires access to the server and prior administrative credentials.
Risk Assessment
A local attacker with server access could compromise agents, leading to malware propagation across the infrastructure.
Recommendation
Update the Apex One server to the latest version and restrict server access to trusted administrators only.
Other vulnerabilities in Trend Micro Apex One
See all- CVE-2025-71211Critical
A vulnerability in the Trend Micro Apex One management console (similar to CVE-2025-71210 but affecting a different executable) allows a remote attacker to upload malicious code and execute commands. Requires access to the management console. SaaS versions are already patched.
- CVE-2025-71210Critical
A vulnerability in the Trend Micro Apex One management console allows a remote attacker to upload malicious code and execute commands. Requires access to the management console. SaaS versions are already patched.
- CVE-2025-71216High
Time-of-check time-of-use vulnerability in Trend Micro Apex One (Mac) agent cache mechanism allows local attacker to escalate privileges. Requires prior low-privileged code execution. Patches available in ActiveUpdate/SaaS updates from mid/late 2025.
- CVE-2025-71214High
An origin validation error vulnerability in the Trend Micro Apex One (mac) agent iCore service could allow a local attacker to escalate privileges on affected installations. The attacker must first obtain the ability to execute low-privileged code on the target system.
- CVE-2025-71213High
An origin validation error vulnerability in Trend Micro Apex One could allow a local attacker to escalate privileges on affected installations. An attacker must first obtain the ability to execute low-privileged code on the target system.
- CVE-2025-71212High
Trend Micro Apex One has a link following vulnerability in the scan engine that could allow a local attacker to escalate privileges. The attacker must first have the ability to execute low-privileged code.
Original NVD description (English source)
A directory traversal vulnerability in the Apex One (on-premise) server 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. This vulnerability is only exploitable on the on-premise version of Apex One and a potential attacker must have access to the Apex One Server and already obtained administrative credentials to the server via some other method to exploit this vulnerability.