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CVE-2026-34926

Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability

Trend Micro Apex OneApplications & CMS
Open in ThreatlineRecord JSON
CVSS
6.7Medium
ExploitationExploited in the wildAdded to KEV 21 May 2026CISA KEV
Exploit odds (EPSS)0.54%Chance of exploitation activity in the next 30 days, higher than 44% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in14.0.0.17079Also 14.0.20731CVE List
Federal deadline4 Jun 2026Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

  • 14.0.0.17079TrendAI Apex OneCVE List
  • 14.0.20731TrendAI Apex One as a ServiceCVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Timeline

  1. 21 May 2026Added to CISA KEVCISA KEV
  2. 21 May 2026, 13:03 UTCPublishedCVE List

Description

Trend Micro Apex One (on-premise) contains a directory traversal vulnerability that could allow a pre-authenticated local attacker to modify a key table on the server to inject malicious code to deploy to agents on affected installations.

Text from CVE List

Affected versions 2

  • TrendAI Apex Oneaffected: 2019 (14.0) before 14.0.0.17079CVE List
  • TrendAI Apex One as a Serviceaffected: SaaS before 14.0.20731CVE List

References 6