Vulnerability in Trendmicro Apex One
CVE-2026-34928
An origin validation vulnerability in the Apex One/SEP agent could allow a local attacker to escalate privileges on affected installations. This is similar to CVE-2026-34927 but exists in a different named pipe communication mechanism. Please note: an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.001 (0.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 1st percentile — 0.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.001 · change: -0.001
Affected products
- Trendmicro Apex One
- Trend Micro, Inc. Trendai Apex One — versions 2019 (14.0)
- Trend Micro, Inc. Trendai Apex One As A Service — versions SaaS
Weakness classification (CWE)
References
- success.trendmicro.com/en-US/solution/KA-0023430 (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-34928?
- CVE-2026-34928 is a high-severity vulnerability in Trendmicro Apex One, classified under Origin Validation Error. CVSS score: 7.8/10. Published 2026-05-21.
- How severe is CVE-2026-34928?
- High severity. CVSS v3 base score is 7.8 out of 10.