CVE-2019-25652
UniFi Network Controller Improper Certificate Validation Leading to Credential Theft via MITM
Vexday Risk Score
21Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 7.7EPSS 0.1%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado
Lifecycle
27 Mar 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
Ubiquiti · UniFi Network ControllerWant to know if your infrastructure is exposed to this?
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