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Trend Micro Apex One CVE-2026-45206

| EUVD-2026-31278 HIGH
Origin Validation Error (CWE-346)
2026-05-21 trendmicro GHSA-3m5q-2hhf-3c5f
7.8
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
May 21, 2026 - 14:17 vuln.today
Patch available
May 21, 2026 - 14:02 EUVD

DescriptionNVD

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-2026-45207 but exists in a different process protection 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.

AnalysisAI

Local privilege escalation in Trend Micro Apex One and Apex One as a Service allows low-privileged attackers to elevate to higher privileges by abusing an origin validation weakness (CWE-346) in one of the agent's process protection communication mechanisms. The flaw is a sibling issue to CVE-2026-45207 affecting a different IPC channel and is reported by Trend Micro itself; no public exploit identified at time of analysis and the CVE is not on CISA KEV.

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RemediationAI

Within 24 hours: Inventory all Trend Micro Apex One and Apex One as a Service deployments across production systems. Within 7 days: Deploy the Trend Micro security patch to all affected instances using your standard patch management process. …

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CVE-2026-45206 vulnerability details – vuln.today

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