CVE-2019-25652
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductUniFi Network Controller
PublishedMar 27, 2026
First seenMar 27, 2026
Weakness typeCWE-295CWE-295
How to fix
Update
- Ubiquiti UniFi Network Controller5.6.42, 5.10.22, 5.11.18 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Ubiquiti UniFi Network Controller | v < 5.6.42, 5.6.43 ≤ v < 5.10.22, 5.11 ≤ v < 5.11.18 | 5.6.42, 5.10.22, 5.11.18 |
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