ZDI-26-138: Trend Micro Apex One Virus Scan Engine Link Following Local Privilege Escalation Vulnerability
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 Virus Scan Engine. By creating a symbolic link, an attacker can abuse the VSApiNt.sys driver to delete arbitrary files. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.
Other sources
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 ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2025-71212.
— ZDI
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Trend Micro Apex One Security Agent (Virus Scan Engine)to a version that resolves this vulnerability.Patch ZDI-26-138
Event History
Frequently Asked Questions
What is the severity of ZDI-26-138?
The severity of ZDI-26-138 is categorized as high due to its potential for local privilege escalation.
How do I fix ZDI-26-138?
To fix ZDI-26-138, update your Trend Micro Apex One Security Agent to the latest version provided by Trend Micro.
Who is affected by ZDI-26-138?
All installations of Trend Micro Apex One Security Agent are potentially affected by ZDI-26-138.
What type of vulnerability is ZDI-26-138?
ZDI-26-138 is classified as a local privilege escalation vulnerability.
What should I do if I’m vulnerable to ZDI-26-138?
If vulnerable to ZDI-26-138, it is recommended to apply the security patch from Trend Micro immediately.