CVE-2026-21633 Auth bypass in UniFi Protect Application
An attacker on the adjacent network can bypass authentication to gain unauthorized access to UniFi Protect cameras via a discovery protocol flaw.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-21633?
CVE-2026-21633 is a high-severity authentication bypass vulnerability in Ubiquiti Inc UniFi Protect Application, published on 5 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A malicious actor with access to the adjacent network could obtain unauthorized access to a UniFi Protect Camera by exploiting a discovery protocol vulnerability in the Unifi Protect Application (Version 6.1.79 and earlier). Affected Products: UniFi Protect Application (Version 6.1.79 and earlier). Mitigation: Update your UniFi Protect Application to Version 6.2.72 or later.
Weakness: CWE-287
Which versions are affected by CVE-2026-21633?
It affects 1 product.
Products include Ui Unifi Protect.
How do I fix CVE-2026-21633?
No fix has been published for CVE-2026-21633 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-21633 being exploited?
There is no known exploitation of CVE-2026-21633 in the wild and no public exploit code.
Other vulnerabilities in Ubiquiti Inc UniFi Protect Application
- CVE-2026-55115 Server-side request forgery in UniFi Protect Application
- CVE-2021-22943 A vulnerability found in UniFi Protect application V1.18.1 and earlier permits a malicious actor who has already gained access to a network
- CVE-2026-56841 SQL injection in UniFi Protect Application
- CVE-2021-22957 Cross-site request forgery in UniFi Protect application
- CVE-2026-54407 Auth bypass in UniFi Protect Application
Sources
Also known as GHSA-pfqp-rqxp-h6v6.