CVE-2026-34926: Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability
In CISA’s Known Exploited Vulnerabilities catalog: Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability.
Added , federal remediation due . Known ransomware use: Unknown.
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.
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.
Vector CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:L · CWE-23
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
Trend Micro, Inc.: TrendAI Apex OneTrend Micro, Inc.: TrendAI Apex One as a Service
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- jvn.jp/en/vu/JVNVU90583059/ (opens in new tab)
- success.trendmicro.com/en-US/solution/KA-0023430 (opens in new tab)
- success.trendmicro.com/ja-JP/solution/KA-0022974 (opens in new tab)
- www.jpcert.or.jp/english/at/2026/at260014.html (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)