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CISA KEV · Known exploitedMedium

CVE-2026-34926

Trend Micro, Inc. TrendAI Apex One, TrendAI Apex One as a Service, apex one

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.

CVSS
6.7
EPSS
12.7%
95.9% percentile
CISA KEV
Listed
Published
2026.05.21
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability12.7%
Technical severityCVSS 6.7

Vulnerability overview

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.

Affected product and versions

Product
Trend Micro, Inc. TrendAI Apex One, TrendAI Apex One as a Service, apex one
Affected versions
>= 2019 (14.0) < 14.0.0.17079, >= SaaS < 14.0.20731, < 14.0.0.17079, < 14.0.20731
Fixed versions
14.0.0.17079, 14.0.20731

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA 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.

Due date: 2026.06.04
  1. 1
    Identify

    Confirm that Trend Micro, Inc. TrendAI Apex One, TrendAI Apex One as a Service, apex one and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:L
CWE
CWE-23
KEV added
2026.05.21
Ransomware use
미확인
CVE-2026-34926 — Trend Micro, Inc. TrendAI Apex One, TrendAI Apex One as a Service, apex one | SECUFOCUS NOW