CVE-2026-34908 Ubiquiti UniFi OS Improper Access Control
A network attacker can exploit improper access control in UniFi OS devices to make unauthorized system changes.
- Exploited in the wild
- Since 23 Jun 2026
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-34908?
CVE-2026-34908 is a critical missing authorization vulnerability in Ubiquiti Inc EFG, published on 22 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A malicious actor with access to the network could exploit an Improper Access Control vulnerability found in UniFi OS devices to make unauthorized changes to the system.
Weakness: CWE-284
Which versions are affected by CVE-2026-34908?
It affects 31 products.
Products include Ui Enterprise Fortress Gateway Firmware, Ui Enterprise Network Video Recorder Core Firmware, Ui Enterprise Network Video Recorder Firmware, Ui Unas 2 Firmware, Ui Unas 4 Firmware, Ui Unas Pro 4 Firmware and 25 more.
How do I fix CVE-2026-34908?
No fix has been published for CVE-2026-34908 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 26 Jun 2026.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-34908 being exploited?
Yes. Attackers have exploited CVE-2026-34908 in the wild since at least 23 Jun 2026.
Public exploit code: 1 Nuclei template and 1 proofs of concept on GitHub.
Other vulnerabilities in Ubiquiti Inc EFG
Sources
Also known as GHSA-p8c5-xwrc-584f.