CVE-2026-34928: High severity Trend Micro Apex One vulnerability

Published May 21, 2026
·
Updated

An origin validation vulnerability in the Apex One/SEP agent could allow a local attacker to escalate privileges on affected installations. This is similar to CVE-2026-34927 but exists in a different named pipe communication mechanism.

Please note: an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

Affected Software

4 affected components
Trend Micro Apex One
Symantec Symantec Endpoint Protection
trendmicro Apex One Windows<14.0.0.17079
trendmicro Apex One Windows<14.0.20731

Event History

May 21, 2026
CVE Published
via MITRE·01:03 PM
Data Sourced
via MITRE·01:03 PM
DescriptionSeverity
Data Sourced
via NVD·02:16 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2026-34928?

CVE-2026-34928 has a severity rating of 7.8, indicating it is classified as high severity.

2

How does CVE-2026-34928 affect affected installations?

CVE-2026-34928 allows a local attacker to escalate privileges on affected installations of Trend Micro Apex One and Symantec Endpoint Protection.

3

What is the risk associated with exploiting CVE-2026-34928?

The risk associated with CVE-2026-34928 is set at 69, highlighting a significant potential for damage if exploited.

4

What type of vulnerability is CVE-2026-34928?

CVE-2026-34928 is classified as an origin validation vulnerability specifically related to named pipe communication mechanisms.

5

What must an attacker do before exploiting CVE-2026-34928?

An attacker must first obtain the ability to execute commands on the affected system before they can exploit CVE-2026-34928.

Contact

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