# CVE-2026-34926

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.

- Page: https://www.vulneraibility.com/cve/CVE-2026-34926
- CVSS: 6.7
- Known exploited: yes, in CISA KEV since 2026-05-21; CISA due date 2026-06-04
- EPSS: 13.42%
- Unvetted proof-of-concept code on GitHub: 1 GitHub proof of concept (first 2026-05-22)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2026-05-22)
- Weakness: CWE-23
- Published: 2026-05-21

## Affected versions

- Trend Micro, Inc. TrendAI Apex One: affected >= 2019 (14.0) and < 14.0.0.17079
- Trend Micro, Inc. TrendAI Apex One as a Service: affected >= SaaS and < 14.0.20731

A version outside these ranges is not a statement that it is unaffected.

## References

- [other] https://success.trendmicro.com/en-US/solution/KA-0023430
- [other] https://success.trendmicro.com/ja-JP/solution/KA-0022974
- [other] https://jvn.jp/en/vu/JVNVU90583059/
- [other] https://www.jpcert.or.jp/english/at/2026/at260014.html
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34926

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.