Description
UniFi Network Controller before version 5.10.22 and 5.11.x before 5.11.18 contains an improper certificate verification vulnerability that allows adjacent network attackers to conduct man-in-the-middle attacks by presenting a false SSL certificate during SMTP connections. Attackers can intercept SMTP traffic and obtain credentials by exploiting the insecure SSL host verification mechanism in the SMTP certificate validation process.
Metrics
CVSS 3.1 7.5/10
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Ubiquiti | UniFi Network Controller | < 5.6.42; >= 5.6.43, < 5.10.22; >= 5.11, < 5.11.18 |
References
Timeline
- Published
- Mar 27, 2026
- Last modified
- Jun 17, 2026
- NVD status
- Awaiting Analysis