CVE-2026-34926

medium

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.

https://www.securityweek.com/trendai-patches-apex-one-zero-day-exploited-in-the-wild/

https://www.bleepingcomputer.com/news/security/trend-micro-warns-of-apex-one-zero-day-exploited-in-attacks/

https://thehackernews.com/2026/05/cisa-adds-exploited-langflow-and-trend.html

https://securityaffairs.com/192529/hacking/u-s-cisa-adds-trend-micro-apex-one-and-langflow-to-its-known-exploited-vulnerabilities-catalog.html

https://www.cisa.gov/news-events/alerts/2026/05/21/cisa-adds-two-known-exploited-vulnerabilities-catalog

https://www.jpcert.or.jp/english/at/2026/at260014.html

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34926

https://success.trendmicro.com/ja-JP/solution/KA-0022974

https://success.trendmicro.com/en-US/solution/KA-0023430

https://jvn.jp/en/vu/JVNVU90583059/

Details

Source: Mitre, NVD

Published: 2026-05-21

Updated: 2026-05-21

Known Exploited Vulnerability (KEV)

Risk Information

CVSS v2

Base Score: 4.9

Vector: CVSS2#AV:L/AC:H/Au:M/C:C/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 6.7

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

Severity: Medium

Vulnerability Watch

Tenable Research has classified this CVE under the following Vulnerability Watch classification, which includes active and historical (inactive) classifications. You can learn more about these classifications on our blog.

Vulnerability of Interest

Detections

Analytics