Trend Micro Apex One Virus Scan Engine Link Following 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. Furthermore, the product is vulnerable only if configured by an administrator to take a non-default malware remediation action.
The specific flaw exists within the VsapiNT.sys kernel module. By creating a symbolic link, an attacker can abuse the driver to create arbitrary files. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.
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-0019917
Disclosure Timeline
- 2024-08-14 - Vulnerability reported to vendor
- 2025-06-11 - Coordinated public release of advisory
- 2025-06-11 - Advisory Updated
Credit
Anonymous
