CVE-2026-34926: Trend Micro Apex One

What is CVE-2026-34926?

A directory traversal vulnerability in the Apex One (on-premise) server 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. This vulnerability is only exploitable on the on-premise version of Apex One and a potential attacker must have access to the Apex One Server and already obtained administrative credentials to the server via some other method to exploit this vulnerability.

CVSS6.7 NVD 3.1

SeverityMEDIUM

Exploitation In the wild In CISA KEV

EPSS13% · P96

Triage statusActive Exploit

ActionPatch immediately

CVSS vectorCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:L

NVD published2026-05-21

NVD last modified2026-06-17

Timeline

2026-05-21Published to the U.S. National Vulnerability Database (NVD)
2026-05-21Added to the CISA Known Exploited Vulnerabilities (KEV) catalog
2026-05-23First covered in a defend.network daily briefing
2026-06-04CISA federal remediation deadline (BOD 22-01)
2026-06-17NVD record last updated

CISA Known Exploited Vulnerability

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

Added to KEV2026-05-21

Federal patch deadline2026-06-04

Known ransomware useUnknown

Affected product

Trend Micro Apex One

References

Referenced in our briefings & reports

GitHub supply-chain attack, Drupal RCE, AWS GovCloud credential leak (2026-05-23)

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🤖 This CVE page is generated by defend.network from NVD, CISA KEV, EPSS, and our verified daily briefings. Severity and exploitation data come from official sources; always verify remediation steps against the official vendor advisory before acting in production.