An incorrect permission assignment vulnerability in Trend Micro Apex One and Apex One as a Service could allow a local attacker to load a DLL with escalated privileges on affected installations. Please note: an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

References

• https://nvd.nist.gov/vuln/detail/CVE-2021-42011
• https://success.trendmicro.com/solution/000289229
• https://www.zerodayinitiative.com/advisories/ZDI-21-1220/