Credentials management flaw in UniFi
Priority LOW 38CWE-300Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
SMTP MITM refers to a malicious actor setting up an SMTP proxy server between the UniFi Controller version <= 5.10.21 and their actual SMTP server to record their SMTP credentials for malicious use later.
Why it matters now
EPSS 0.01295 70th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| UniFi | UniFi | up to 5.10.21 | — | No fix listed | CNA |
- UniFi VendorUniFi Affected up to 5.10.21 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-5456
- 2026-10-03 Alias added: GHSA-8hq9-mg8q-pw66
References
More Ubiquiti Unifi Controller vulnerabilities
- TI-2020-10094 The Open Connectivity Foundation UPnP specification before 2020-04-17 does not forbid the… CVSS 3.1HIGH 7.5
- TI-2014-01759 Multiple cross-site request forgery (CSRF) vulnerabilities in Ubiquiti Networks UniFi… CVSS 3.1HIGH 8.8
- TI-2013-03118 Cross-site scripting (XSS) vulnerability in the administer interface in the UniFi… CVSS 3.1MEDIUM 6.1
- TI-2014-01760 Ubiquiti UniFi Controller before 3.2.1 logs the administrative password hash in syslog… CVSS 2.0LOW 2.6
Sources
- CVE-2019-5456 · CVE Program
- CVE-2019-5456 · NVD
- FIRST EPSS
- GHSA-8hq9-mg8q-pw66 · GitHub Advisory Database · CC BY 4.0
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