CVE-2026-77551 Missing authorization in UniFi Connect Display Cast Pro
A network-accessible attacker can exploit improper access control in UniFi Connect Display Cast Pro to escalate privileges on the device.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-77551?
CVE-2026-77551 is a critical missing authorization vulnerability in Ubiquiti Inc UniFi Connect Display Cast Pro, published on 26 Aug 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 and under certain conditions could exploit an Improper Access Control vulnerability found in UniFi Connect Display Cast Pro to escalate privileges on the device.
Weakness: CWE-284
Which versions are affected by CVE-2026-77551?
How do I fix CVE-2026-77551?
No fix has been published for CVE-2026-77551 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-77551 being exploited?
There is no known exploitation of CVE-2026-77551 in the wild and no public exploit code.
Sources
Also known as GHSA-3pq9-9xj7-2qqx.