CVE-2026-34926
(On-Premise) Directory Traversal in Trend Micro Apex One. CISA confirmed attackers exploit it and added it to its Known Exploited Vulnerabilities catalog on 21 May 2026.
- Product
- Trend Micro Apex One
- Added to CISA's catalog
- Federal fix-by date
- Ransomware
- No known use in ransomware campaigns
- Vendor advisories
- Sources
- CISA’s catalog, NVD entry
CISA’s 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.
Every flaw CISA confirmed exploited in the last 30 days is on the exploit watch. This is not security advice. Check the vendor’s advisory before acting. From CISA’s catalog of 4 November 2026.