CVE-2026-34926

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 v3 vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:L

Weaknesses (CWE)

CWE-23

Threats tracking this CVE

• CISA KEV (2026-05-21): CVE-2025-34291 Langflow CORS Token Hijack-to-RCE & CVE-2026-34926 Trend Micro Apex One On-Premise Directory Traversal — CRITICAL

References

• https://success.trendmicro.com/en-US/solution/KA-0023430
• https://success.trendmicro.com/ja-JP/solution/KA-0022974
• https://jvn.jp/en/vu/JVNVU90583059/
• https://www.jpcert.or.jp/english/at/2026/at260014.html

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