CVE-2026-34926
Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability
CVSS
—
No CVSS
EPSS
12.7%
p96
KEV
YES
May 21, 2026
Exploit Today
79
0-100
Published: — · Last modified: —
Product
Trend Micro / Apex One
Vulnerability
Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability
Added to KEV
May 21, 2026
Remediate by
Jun 4, 2026
Known ransomware use
No
Summary 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
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