Path traversal in UniFi Video Controller
Key facts
- Attack vector
- Adjacent network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- 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
The UniFi Video Server v3.9.3 and prior (for Windows 7/8/10 x64) web interface Firmware Update functionality, under certain circumstances, does not validate firmware download destinations to ensure they are within the intended destination directory tree. It accepts a request with a URL to firmware update information. If the version field contains ..\ character sequences, the destination file path to save the firmware can be manipulated to be outside the intended destination directory tree. Fixed in UniFi Video Controller v3.10.3 and newer.
Why it matters now
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 Video Controller (for Windows 7/8/10 x64) | v3.9.3 and prior are affected; Fixed in v3.10.3 and newer | — | No fix listed | CNA |
- UniFi Video Controller (for Windows 7/8/10 x64) Vendor— Affected v3.9.3 and prior are affected; Fixed in v3.10.3 and newer Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-8144
- 2026-10-03 Alias added: GHSA-8vc5-gg9h-3rv8
References
More Ubiquiti Unifi Video vulnerabilities
- TI-2019-03839 Cross-site request forgery in UniFi Video Server CVSS 3.0HIGH 8.8
- TI-2016-05937 Ubiquiti UniFi Video before 3.8.0 for Windows uses weak permissions for the installation… CVSS 3.1HIGH 7.8
- TI-2020-15188 In Ubiquiti UniFi Video v3.10.13, when the executable starts, its first library… CVSS 3.1HIGH 7.8
- TI-2020-06564 Uncontrolled search path in UniFi Video Controller CVSS 3.1HIGH 7.8
- TI-2020-06563 The UniFi Video Server (Windows) web interface configuration restore functionality at the… CVSS 3.1MEDIUM 6.5
- TI-2014-01761 The default Flash cross-domain policy (crossdomain.xml) in Ubiquiti Networks UniFi Video… CVSS 2.0MEDIUM 6.0
Sources
- CVE-2020-8144 · CVE Program
- CVE-2020-8144 · NVD
- FIRST EPSS
- GHSA-8vc5-gg9h-3rv8 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences