CVE-2026-77539

critical · 9.1

A malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UniFi OS Server to execute a Command Injection on the host device.

9.1

CVSS

1.3%

EPSS (exploit prob.)

70th

EPSS percentile

2026-08-26

Published

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

Weaknesses

CWE-20

References

https://community.ui.com/releases/Security-Advisory-Bulletin-067/fc4a3488-7c43-4628-8bab-f715e96dbfc9

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-77539