CVE-2026-34926
Trend Micro, Inc. TrendAI Apex One, Trend Micro, Inc. TrendAI Apex One as a Service
Published 21 May 2026 · updated 23 Jul 2026 · Analyzed
Exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on 21 May 2026, with a remediation deadline of 4 Jun 2026 for US federal agencies.
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.
Description
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.
References
- jvn.jp/en/vu/JVNVU90583059/ · Third Party Advisory
- success.trendmicro.com/en-US/solution/KA-0023430 · Vendor Advisory
- success.trendmicro.com/ja-JP/solution/KA-0022974 · Vendor Advisory
- www.jpcert.or.jp/english/at/2026/at260014.html · Third Party Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34926 · Third Party Advisory, US Government Resource