{"id":"CVE-2026-34926","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-34926","generatedAt":"2026-10-28T15:30:04.929Z","title":"Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability","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.\n\n\r\nThis 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.","published":"2026-05-21T14:16:45.000Z","lastModified":"2026-07-23T16:10:00.000Z","status":"Analyzed","sourceIdentifier":"security@trendmicro.com","cvss":{"version":"3.1","score":6.7,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:L"},"cwe":["CWE-23"],"affected":["trendmicro/apex one"],"epss":{"score":0.1342,"percentile":0.96405,"date":"2026-10-27","history":[{"date":"2026-09-24","score":0.00538,"percentile":0.42795},{"date":"2026-10-25","score":0.1342,"percentile":0.96396}]},"kev":{"listed":true,"dateAdded":"2026-05-21","dueDate":"2026-06-04","knownRansomwareCampaignUse":"Unknown","notes":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.\nhttps://success.trendmicro.com/en-US/solution/KA-0023430 ; https://nvd.nist.gov/vuln/detail/CVE-2026-34926"},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 4 June 2026). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[{"kind":"epss","label":"EPSS jump","at":"2026-10-25T00:00:00.000Z","detail":{"to":0.1342,"from":0.00538,"percentile":0.96396},"summary":"EPSS moved from 0.5% to 13.4% probability of exploitation in the next thirty days."}],"references":[{"url":"https://jvn.jp/en/vu/JVNVU90583059/","tags":["Third Party Advisory"],"source":"security@trendmicro.com"},{"url":"https://success.trendmicro.com/en-US/solution/KA-0023430","tags":["Vendor Advisory"],"source":"security@trendmicro.com"},{"url":"https://success.trendmicro.com/ja-JP/solution/KA-0022974","tags":["Vendor Advisory"],"source":"security@trendmicro.com"},{"url":"https://www.jpcert.or.jp/english/at/2026/at260014.html","tags":["Third Party Advisory"],"source":"security@trendmicro.com"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34926","tags":["Third Party Advisory","US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-34926","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}