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Trend Micro · Apex One

CVE-2026-34926

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

CISA KEV record

CISA date added
2026-05-21
CISA due date
2026-06-04
Known ransomware use
Unknown

NVD risk context

6.7 MEDIUM

CVSS is a technical severity score. CISA’s KEV status remains the evidence that this vulnerability is known to be exploited.

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Attack vector
Local
An attacker needs local access to the affected system.
Attack complexity
High
Exploitation depends on conditions outside the attacker’s direct control.
Privileges required
High
The attacker needs substantial privileges before exploiting the issue.
User interaction
None
No action by another user is required.

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.

Required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

NVD reference index

Vendor and remediation references

NVD has tagged these sources as vendor advisories, patches, mitigations, or release notes.

Other NVD references (3)

MITRE CWE context

CWE classification

CWE-23 Relative Path Traversal

The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory.

View official MITRE CWE details ↗

NVD record timing

NVD record timeline

These dates describe NVD’s record, not CISA’s KEV addition or remediation due date.

NVD published
May 21, 2026, 02:16 PM UTC
When NVD first published this CVE record.
NVD last updated
Jul 23, 2026, 04:10 PM UTC
When NVD last changed its analysis or record data.
Advanced: view the technical CVSS vector

This standardized code is intended for security tools and technical analysts. The plain-language risk summary above explains its main points.

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

View NVD record ↗

CISA notes

https://success.trendmicro.com/en-US/solution/KA-0023430 ; https://nvd.nist.gov/vuln/detail/CVE-2026-34926