CVE-2026-34909
Path Traversal in Ubiquiti UniFi OS. CISA confirmed attackers exploit it and added it to its Known Exploited Vulnerabilities catalog on 23 June 2026.
- Product
- Ubiquiti UniFi OS
- Added to CISA's catalog
- Federal fix-by date
- Ransomware
- No known use in ransomware campaigns
- Vendor advisories
- Sources
- CISA’s catalog, NVD entry
CISA’s description.
Ubiquiti UniFi OS contains a path traversal vulnerability which could allow a malicious actor with access to the network to access files on the underlying system that could be manipulated to access an underlying account.
More from Ubiquiti this year.
- CVE-2026-34910 Improper Input Validation, added
- CVE-2026-34908 Improper Access Control, added
Every flaw CISA confirmed exploited in the last 30 days is on the exploit watch. This is not security advice. Check the vendor’s advisory before acting. From CISA’s catalog of 4 November 2026.