CVE DATABASE / CVE-2026-34926
CVE-2026-34926
Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability
Confirmed exploited in the wild. Added 2026-05-21.
Federal remediation due 2026-06-04.
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.
Summary
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 3.1 breakdown
| Base score | 6.7 (MEDIUM) |
| Vector | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:L |
| Attack vector | LOCAL |
| Attack complexity | HIGH |
| Privileges required | HIGH |
| User interaction | NONE |
| Scope | CHANGED |
| Confidentiality | HIGH |
| Integrity | LOW |
| Availability | LOW |
Weakness type (CWE)
Use our free CVE Lookup tool for the latest NVD record, or browse the full CISA KEV catalog.
References
- https://jvn.jp/en/vu/JVNVU90583059/
- https://success.trendmicro.com/en-US/solution/KA-0023430
- https://success.trendmicro.com/ja-JP/solution/KA-0022974
- https://www.jpcert.or.jp/english/at/2026/at260014.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34926
Data: NIST NVD + CISA KEV. NVD last modified 2026-05-21. Always verify against the vendor advisory before acting.