# CVE-2026-34926: Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability

> CVE-2026-34926: Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability. CVSS 6.7 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2026-34926
Last updated: 2026-07-23T16:10:00Z

- Published: 2026-05-21 13:03 UTC · Updated: 2026-07-23 16:10 UTC · Assigner: trendmicro
- CVSS: 6.7 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:L
- EPSS: 13.4%, 96th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2026-05-21, federal due date 2026-06-04, ransomware use: Unknown
- CWE: CWE-23

## Description

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.

## 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.

## Affected vendors and products

- Trend Micro, Inc.: TrendAI Apex One
- Trend Micro, Inc.: TrendAI Apex One as a Service

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-34926)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-34926)
- [https://jvn.jp/en/vu/JVNVU90583059/](https://jvn.jp/en/vu/JVNVU90583059/)
- [https://success.trendmicro.com/en-US/solution/KA-0023430](https://success.trendmicro.com/en-US/solution/KA-0023430)
- [https://success.trendmicro.com/ja-JP/solution/KA-0022974](https://success.trendmicro.com/ja-JP/solution/KA-0022974)
- [https://www.jpcert.or.jp/english/at/2026/at260014.html](https://www.jpcert.or.jp/english/at/2026/at260014.html)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-34926 · Markdown: https://rewindex.com/cve/CVE-2026-34926.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-34926 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T04:04:40.286Z