CVE-2021-42012 Memory corruption in Trend Micro Apex One

High 7.8 Published 21 Oct 2021 Updated 4 Aug 2024

A local attacker with low-privileged code execution can exploit a stack-based buffer overflow to escalate privileges in Trend Micro security products.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-42012?

CVE-2021-42012 is a high-severity memory corruption vulnerability in Trendmicro Apex One, published on 21 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A stack-based buffer overflow vulnerability in Trend Micro Apex One, Apex One as a Service and Worry-Free Business Security 10.0 SP1 could allow a local attacker to escalate 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.

Weakness: CWE-787

Which versions are affected by CVE-2021-42012?

It affects 3 products.

Products include Trendmicro Apex One, Trendmicro Worry-Free Business Security, Trendmicro Worry-Free Business Security Services.

How do I fix CVE-2021-42012?

No fix has been published for CVE-2021-42012 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2021-42012 being exploited?

There is no known exploitation of CVE-2021-42012 in the wild and no public exploit code.

All Trendmicro Apex One vulnerabilities

Sources

Also known as GHSA-m654-qf29-wq6w.