Vulnerability · Published Jan 5, 2026 · Assigned by hackerone
CVE-2026-21634
Medium 6.5
In plain English
A medium-severity memory corruption in UniFi Protect Application from Ubiquiti Inc. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.4%top 62.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A malicious actor with access to the adjacent network could overflow the UniFi Protect Application (Version 6.1.79 and earlier) discovery protocol causing it to restart. Affected Products: UniFi Protect Application (Version 6.1.79 and earlier). Mitigation: Update your UniFi Protect Application to Version 6.2.72 or later.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Ubiquiti Inc | UniFi Protect Application | 6.1.79 – before 6.2.72 |
Weakness: CWE-119 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H