Vulnerability details
CVE-2026-34926
Actively exploited
Trend Micro TrendAI Apex OneTrend Micro TrendAI Apex One as a Service
CVSS 3.1
6.7Medium
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 6.7Medium | 3.1 | CVEProject cvelistV5 (CNA) (trendmicro) | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:L |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Trend Micro, Inc. | TrendAI Apex One | 2019 (14.0) ≤ v < 14.0.0.17079 | CVEProject cvelistV5 (CNA) |
| Trend Micro, Inc. | TrendAI Apex One as a Service | SaaS ≤ v < 14.0.20731 | CVEProject cvelistV5 (CNA) |
References and advisories
5- https://success.trendmicro.com/en-US/solution/KA-0023430
- https://success.trendmicro.com/ja-JP/solution/KA-0022974
- https://jvn.jp/en/vu/JVNVU90583059/
- https://www.jpcert.or.jp/english/at/2026/at260014.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34926 government-resource
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Details
- Published
- 2026-05-21
- Last updated
- 2026-05-22
- State
- Published
- Assigner (CNA)
- trendmicro
- Kolun priority
- 74 · High
CISA KEV catalog
- Date added
- 2026-05-21
- Due date
- 2026-06-04
- Used in ransomware
- Unknown
Exploit prediction (EPSS)
13.42%
Probability of exploitation in 30 days
96.4%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Active
- Technical impact
- Total
Weaknesses (CWE)
- CWE-23Relative Path Traversal