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CVE-2026-34926Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability
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.
6.7 MEDIUMEPSS 13.42%⚡ Known Exploited (CISA KEV)NVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 6.7 | MEDIUM | 3.1trendmicro (CNA) | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:L |
CISA required action
⚡ Known exploited · remediation due Jun 4, 2026
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Details
- CVE ID
- CVE-2026-34926
- Status
- Analyzed
- Assigner (CNA)
- trendmicro
- Published
- May 21, 2026
- Last modified
- 2026-07-23 16:10 UTC
- Weaknesses
- CWE-23 · Relative Path Traversal
Affected Products
As published by the CNA in the CVE record.
Trend Micro, Inc.TrendAI Apex One1 version range
- 2019 (14.0) before 14.0.0.17079
Trend Micro, Inc.TrendAI Apex One as a Service1 version range
- SaaS before 14.0.20731
References
- jvn.jp https://jvn.jp/en/vu/JVNVU90583059/
- success.trendmicro.com https://success.trendmicro.com/en-US/solution/KA-0023430
- success.trendmicro.com https://success.trendmicro.com/ja-JP/solution/KA-0022974
- jpcert.or.jp https://www.jpcert.or.jp/english/at/2026/at260014.html
- cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34926