Agent code deployment via server directory traversal
Published May 21, 2026 · Updated May 21, 2026
Path traversal in Trend Micro Apex One 2019 before 14.0.0.17079 allows local users to deploy malicious code to managed agents. The server accepts a traversing path during modification of a key table, allowing injected code to enter content distributed to agents. Exploitation requires access to the on-premises Apex One server and previously obtained server administrative credentials; the SaaS service is not exploitable through this flaw.
Summary
What happened
Path traversal in Trend Micro Apex One 2019 before 14.0.0.17079 allows local users to deploy malicious code to managed agents. The server accepts a traversing path during modification of a key table, allowing injected code to enter content distributed to agents. Exploitation requires access to the on-premises Apex One server and previously obtained server administrative credentials; the SaaS service is not exploitable through this flaw.
The record
- CVE
- CVE-2026-34926
- Published
- May 21, 2026
- Updated
- May 21, 2026
- Vendor
- Trend Micro
- Product
- Apex One as a Service
- Classifications
- CWE-23, T1072
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- May 21, 2026CVE publishedPublication date reported by the CVE source.
- May 21, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=SaaS <14.0.20731
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Reported exploitation
- CISA Known Exploited Vulnerabilities entryknown exploited catalog
- Trend Micro observed exploitation attemptreported exploitation
Technologies
Your stack
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Your stack
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