Buffer Overflow Vulnerability in UniFi Protect Application by Ubiquiti
CVE-2026-21634

6.5MEDIUM

Key Information:

Vendor

Ubiquiti Inc

Status
Unifi Protect Application
Vendor
CVE Published:
5 January 2026

What is CVE-2026-21634?

A buffer overflow vulnerability in the UniFi Protect Application allows an attacker on the adjacent network to exploit the discovery protocol, potentially causing the application to restart unexpectedly. Users should ensure their application is updated to Version 6.2.72 or later to mitigate this risk.

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Affected Version(s)

UniFi Protect Application 6.1.79 < 6.2.72

References

https://community.ui.com/releases/Security-Advisory-Bulle...

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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