CVE-2026-34910
Improper Input Validation 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 an improper input validation vulnerability which could allow a malicious actor with access to the network to conduct command injection.
More from Ubiquiti this year.
- CVE-2026-34909 Path Traversal, 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.