CVE-2026-34926 — Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability
CVE-2026-34926: Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | Trend Micro |
| Product | Apex One |
| Date added | 2026-05-21 |
| Due date | 2026-06-04 |
| Ransomware campaign use | Unknown |
Description
Trend Micro Apex One (on-premise) contains a directory traversal vulnerability that 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.
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notes
https://success.trendmicro.com/en-US/solution/KA-0023430 ; https://nvd.nist.gov/vuln/detail/CVE-2026-34926
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-34926
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog