How do I fix ZDI-21-420?

To fix ZDI-21-420, update Trend Micro Antivirus for Mac to the latest version provided by the vendor.

Who is affected by ZDI-21-420?

Users of Trend Micro Antivirus for Mac are affected by ZDI-21-420 if they haven't applied the necessary security updates.

What type of attacker can exploit ZDI-21-420?

ZDI-21-420 can be exploited by local attackers who already have the ability to execute low-privileged code on the target system.

What actions should I take if I am vulnerable to ZDI-21-420?

If vulnerable to ZDI-21-420, immediate steps should include updating your Trend Micro Antivirus for Mac installation and reviewing system security practices.

Vulnerability/
ZDI-21-420

high

7.8

29/1/2025

ZDI-21-420: Trend Micro Antivirus for Mac Improper Access Control Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on affected installations of Trend Micro Antivirus for Mac. 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 com.trendmicro.AFM.HelperTool. The issue results from improper access control. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root.

Affected Software	Affected Version	How to fix
Trend Micro Antivirus

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Frequently Asked Questions

What is the severity of ZDI-21-420?
The severity of ZDI-21-420 is critical as it allows local attackers to escalate privileges on affected installations of Trend Micro Antivirus for Mac.
How do I fix ZDI-21-420?
To fix ZDI-21-420, update Trend Micro Antivirus for Mac to the latest version provided by the vendor.
Who is affected by ZDI-21-420?
Users of Trend Micro Antivirus for Mac are affected by ZDI-21-420 if they haven't applied the necessary security updates.
What type of attacker can exploit ZDI-21-420?
ZDI-21-420 can be exploited by local attackers who already have the ability to execute low-privileged code on the target system.
What actions should I take if I am vulnerable to ZDI-21-420?
If vulnerable to ZDI-21-420, immediate steps should include updating your Trend Micro Antivirus for Mac installation and reviewing system security practices.

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agent/title
agent/severity
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alias/ZDI-21-420
alias/ZDI-CAN-12217
alias/CVE-2021-28648
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vendor/trend micro
canonical/trend micro antivirus

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