TippingPoint Zero Day Initiative

Trend Micro Maximum Security tmusa Time-Of-Check/Time-Of-Use Privilege Escalation Vulnerability

ZDI-17-396: June 13th, 2017

CVSS Score

Affected Vendors

Affected Products

    Maximum Security

Vulnerability Details

This vulnerability allows local attackers to escalate privilege on vulnerable installations of Trend Micro Maximum Security. 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 processing of IOCTL 0x222813. The issue results from a time-of-check/time-of-use vulnerability, which allows an attacker to change a field that is being used by the kernel. An attacker can leverage this vulnerability to escalate privileges to SYSTEM.

Vendor Response

Trend Micro has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2017-03-28 - Vulnerability reported to vendor
    2017-06-13 - Coordinated public release of advisory


This vulnerability was discovered by:
    Jaanus Kp
    Clarified Security