CVE-2026-34909

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.

  • Published May 22, 2026
  • CVSS 10.0 critical
  • 1.8% chance of exploitation in the next 30 days (EPSS)
  • In CISA's Known Exploited Vulnerabilities catalog
  • Public exploit code is available
  • A fix is available

Affected software

In the news

CVE-2026-34909 at the National Vulnerability Database