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Luu, T.J.

🔥 This vulnerability is being actively exploited in the wild (CISA Known Exploited Vulnerabilities catalog)

CVE-2026-34926: Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability

infovulnerability🔥 Actively Exploited

security

Source: CISA Known Exploited VulnerabilitiesMay 20, 2026CVE-2026-34926

Summary

Trend Micro Apex One (on-premise) has a directory traversal vulnerability (a flaw that lets attackers access files outside their intended directory) that allows a local attacker without authentication to modify a key table on the server and inject malicious code to be sent to managed agents. This vulnerability is currently being actively exploited by attackers.

Solution / Mitigation

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Vulnerability Details

EPSS (30-day exploit probability)

EPSS: 0.0%

Patch Available

Yes

Exploit Maturity

🔥 Actively Exploited

Disclosure Date

May 20, 2026

Classification

Attack SophisticationModerate

Taxonomy References

CWE (Weakness Type)

CWE-23

CAPEC (Attack Pattern)

CAPEC-126

Monthly digest — independent AI security research

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-34926

First tracked: May 21, 2026 at 08:00 PM

Classified by LLM (prompt v3) · confidence: 95%