SECURELYN
Free ScanFree consultation

CVE-2026-34910

A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS devices to execute a Command Injection.

Scores

10.0
CVSS 10.0 out of 10, critical severity.
45.8%
EPSS 45.8% chance of exploitation in the next 30 days.

The facts

Published
22 May 2026
Last changed
23 July 2026
NVD status
Analyzed
Severity
Critical, CVSS 10.0 out of 10 (version 3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness
Affects
  • ui unifi os server
  • ui unifi cloud gateway industrial firmware
  • ui unifi dream machine firmware
  • ui unifi dream machine pro firmware
  • ui unifi dream machine special edition firmware
Known exploited
Yes. CISA added it to the Known Exploited Vulnerabilities catalogue on 23 June 2026.
EPSS
45.8% chance of exploitation activity in the next 30 days (percentile 99).

Is there a Securelyn advisory?

Not yet. Securelyn writes plain-English advisories for the flaws that matter most to businesses. Subscribe to the digest to hear about them.

References