CVE-2026-34926

Relative Path Traversal

CVSS 3.1 Medium 6.7Known exploited (CISA KEV)

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:L

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.

Key data

CVSS 3.1 Medium 6.7

Score published by trendmicro in the CVE record.

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:L

Attack vector: Local
The attacker needs local access to the system, or to trick a user into running something.
Attack complexity: High
The attack depends on conditions outside the attacker's control, so it takes preparation.
Privileges required: High
An account with significant privileges, such as an administrator, is needed.
User interaction: None
No action from any user is needed.
Scope: Changed
The impact can reach other components beyond the vulnerable one.
Confidentiality impact: High
Serious or total effect on the secrecy of data.
Integrity impact: Low
Limited effect on the trustworthiness of data.
Availability impact: Low
Limited effect on availability.

Metric	Value	What it means
Attack vector	Local	The attacker needs local access to the system, or to trick a user into running something.
Attack complexity	High	The attack depends on conditions outside the attacker's control, so it takes preparation.
Privileges required	High	An account with significant privileges, such as an administrator, is needed.
User interaction	None	No action from any user is needed.
Scope	Changed	The impact can reach other components beyond the vulnerable one.
Confidentiality impact	High	Serious or total effect on the secrecy of data.
Integrity impact	Low	Limited effect on the trustworthiness of data.
Availability impact	Low	Limited effect on availability.

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at first.org/cvss.

EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score: 0.13420 (13.4% probability)
Percentile: 96.5%
Scores of: Nov 10, 2026
Model: v2026.06.15

CISA Known Exploited Vulnerabilities

This CVE is listed in the CISA KEV catalog.

Name in the catalog: Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability
Added to the catalog: May 21, 2026
Federal due date: Jun 4, 2026

CISA assessment as of May 22, 2026

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.

Exploitation: Recorded by CISA as active
Automatable: no
Technical impact: total

Weakness (CWE)

CWE catalog version 5.0.

CWE-23Relative Path Traversal

Affected products

Products listed in the CVE record, as the CNA published them.

Trend Micro, Inc. TrendAI Apex One
- affected: 2019 (14.0) up to before 14.0.0.17079
Trend Micro, Inc. TrendAI Apex One as a Service
- affected: SaaS up to before 14.0.20731

References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

Timeline

ID reservedMar 31, 2026
Added to CISA KEVMay 21, 2026
Record publishedMay 21, 2026
Record last updatedMay 22, 2026

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About CubePath

CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.

Cloud VPS DDoS protection

Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:10 UTC. Sources and licenses