CVE-2019-14685

Vulnerability

Trend Micro Security 2019 (v15.0) contains a local privilege escalation vulnerability stemming from an unquoted search path. The issue resides in a specific product feature that, when exploited, allows an attacker to manipulate the service execution path. Affected versions include Trend Micro Security 2019 v15.0 and possibly earlier builds; the advisory [1] identifies the unquoted service path as the root cause.

Exploitation

An attacker must have local access to the system and the ability to place a malicious executable in a directory that will be searched due to the unquoted path. No user interaction beyond normal system operation is required. By creating a crafted executable named to match the unquoted path component, the attacker can cause the service to load the malicious file instead of the legitimate one [1].

Impact

Successful exploitation leads to local privilege escalation, allowing the attacker to execute arbitrary code with elevated (SYSTEM) privileges. This can result in full compromise of the affected system, including unauthorized data access, malware installation, and persistent control [1].

Mitigation

Trend Micro has released a fix in an updated version of Trend Micro Security 2019. Users should upgrade to the latest build as provided by the vendor. No workaround is available; the unquoted path must be corrected in the service configuration. The vulnerability is not listed on CISA's Known Exploited Vulnerabilities catalog as of the publication date [1].