High severity · published Jan 5, 2026
CVE-2026-21633
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…
8.8
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UP
Unifi Protect · UI
before 6.2.72 · source: NVD
In the news
VulnerabilityMedium
ZDI-26-127: (Pwn2Own) Ubiquiti Networks AI Pro Cleartext Transmission Information Disclosure Vulnerability
This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of Ubiquiti Networks AI Pro. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 5.3. The following CVEs are assigned: CVE-2026-21633.
Feb 25, 2026·Zero Day Initiative
VulnerabilityMedium
ZDI-26-126: (Pwn2Own) Ubiquiti Networks AI Pro Discovery Protocol Missing Encryption Protocol Downgrade Vulnerability
This vulnerability allows network-adjacent attackers to downgrade the communication protocol on affected installations of Ubiquiti Networks AI Pro. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 5.4. The following CVEs are assigned: CVE-2026-21633.
Feb 25, 2026·Zero Day Initiative
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-21633
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-21633
Vendor Advisory
https://community.ui.com/releases/Security-Advisory-Bulletin-058-058/6922ff20-8cd7-4724-8d8c-676458a2d0f9
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