Trend Micro Apex One Security Agent Cache Mechanism Time-Of-Check Time-Of-Use Local Privilege Escalation Vulnerability
Vulnerability Details
This vulnerability allows local attackers to escalate privileges on affected installations of Trend Micro Apex One Security Agent. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the cache mechanism. The issue results from the lack of proper cache key checking during signature verification. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root.
Additional Details
Trend Micro has issued an update to correct this vulnerability. More details can be found at:
https://success.trendmicro.com/en-US/solution/KA-0022458
Disclosure Timeline
- 2025-04-08 - Vulnerability reported to vendor
- 2026-03-03 - Coordinated public release of advisory
- 2026-03-03 - Advisory Updated
Credit
Lays (@_L4ys) of TRAPA Security
