Threat Intelligence / CVE / CVE-2026-34909

CVE-2026-34909

CVSS 10 (CRITICAL) · EPSS 0.0% · Published 2026-05-22

A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi OS devices to access files on the underlying system that could be manipulated to access an underlying account.

CVSS v3 vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Weaknesses (CWE)

CWE-22

Threats tracking this CVE

Ubiquiti UniFi OS — Three Max-Severity Pre-Auth Vulnerabilities (CVE-2026-34908 / 34909 / 34910) in Security Advisory Bulletin 064 — CRITICAL

References

https://community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cf4-42ab-bd61-cc994445963b

Full detection coverage & IOCs for threats exploiting CVE-2026-34909 are available via the Threadlinqs MCP server (Purple tier). View plans →

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