Improper certificate validation in Ubiquiti UDM
Priority LOW 26CWE-295Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.0 · CNA. Fix status from CNA. Impact type from CWE-295.
Summary
An Improper Certificate Validation on UniFi OS devices, with Identity Enterprise configured, could allow a malicious actor to execute a man-in-the-middle (MitM) attack during application update.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.002 9th percentileScored 2026-11-07
Fix Fixed UDM (Ubiquiti Inc): 4.1.13UDM-Pro (Ubiquiti Inc): 4.1.13+10 more products
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Ubiquiti | UDM | 4.1.13 to before 4.1.13 | 4.1.13 | Patch available | CNA |
| Ubiquiti | UDM-Pro | 4.1.13 to before 4.1.13 | 4.1.13 | Patch available | CNA |
| Ubiquiti | UDM-SE | 4.1.13 to before 4.1.13 | 4.1.13 | Patch available | CNA |
| Ubiquiti | UDM-Pro-Max | 4.1.13 to before 4.1.13 | 4.1.13 | Patch available | CNA |
| Ubiquiti | UDW | 4.1.13 to before 4.1.13 | 4.1.13 | Patch available | CNA |
| Ubiquiti | UNVR | 4.1.11 to before 4.1.11 | 4.1.11 | Patch available | CNA |
| Ubiquiti | UNVR PRO | 4.1.11 to before 4.1.11 | 4.1.11 | Patch available | CNA |
| Ubiquiti | UCKP | 4.1.11 to before 4.1.11 | 4.1.11 | Patch available | CNA |
| Ubiquiti | UCK | 4.1.11 to before 4.1.11 | 4.1.11 | Patch available | CNA |
| Ubiquiti | UCK-Enterprise | 4.1.11 to before 4.1.11 | 4.1.11 | Patch available | CNA |
| Ubiquiti | UCG-Max | 4.1.13 to before 4.1.13 | 4.1.13 | Patch available | CNA |
| Ubiquiti | EFG | 4.1.13 to before 4.1.13 | 4.1.13 | Patch available | CNA |
- UDM VendorUbiquiti Affected 4.1.13 to before 4.1.13 Fixed in 4.1.13 Patch available CNA
- UDM-Pro VendorUbiquiti Affected 4.1.13 to before 4.1.13 Fixed in 4.1.13 Patch available CNA
- UDM-SE VendorUbiquiti Affected 4.1.13 to before 4.1.13 Fixed in 4.1.13 Patch available CNA
- UDM-Pro-Max VendorUbiquiti Affected 4.1.13 to before 4.1.13 Fixed in 4.1.13 Patch available CNA
- UDW VendorUbiquiti Affected 4.1.13 to before 4.1.13 Fixed in 4.1.13 Patch available CNA
- UNVR VendorUbiquiti Affected 4.1.11 to before 4.1.11 Fixed in 4.1.11 Patch available CNA
- UNVR PRO VendorUbiquiti Affected 4.1.11 to before 4.1.11 Fixed in 4.1.11 Patch available CNA
- UCKP VendorUbiquiti Affected 4.1.11 to before 4.1.11 Fixed in 4.1.11 Patch available CNA
- UCK VendorUbiquiti Affected 4.1.11 to before 4.1.11 Fixed in 4.1.11 Patch available CNA
- UCK-Enterprise VendorUbiquiti Affected 4.1.11 to before 4.1.11 Fixed in 4.1.11 Patch available CNA
- UCG-Max VendorUbiquiti Affected 4.1.13 to before 4.1.13 Fixed in 4.1.13 Patch available CNA
- EFG VendorUbiquiti Affected 4.1.13 to before 4.1.13 Fixed in 4.1.13 Patch available CNA
Remediation
- Fix · CNA UDM (Ubiquiti Inc) Fixed in 4.1.13
- Fix · CNA UDM-Pro (Ubiquiti Inc) Fixed in 4.1.13
- Fix · CNA UDM-SE (Ubiquiti Inc) Fixed in 4.1.13
- Fix · CNA UDM-Pro-Max (Ubiquiti Inc) Fixed in 4.1.13
- Fix · CNA UDW (Ubiquiti Inc) Fixed in 4.1.13
- Fix · CNA UNVR (Ubiquiti Inc) Fixed in 4.1.11
- Fix · CNA UNVR PRO (Ubiquiti Inc) Fixed in 4.1.11
- Fix · CNA UCKP (Ubiquiti Inc) Fixed in 4.1.11
- Fix · CNA UCK (Ubiquiti Inc) Fixed in 4.1.11
- Fix · CNA UCK-Enterprise (Ubiquiti Inc) Fixed in 4.1.11
- Fix · CNA UCG-Max (Ubiquiti Inc) Fixed in 4.1.13
- Fix · CNA EFG (Ubiquiti Inc) Fixed in 4.1.13
Timeline
- 2026-10-02 Threatist record created from CVE-2025-23091
- 2026-10-03 Alias added: GHSA-j57h-g9hv-4p44
References
More Ubiquiti vulnerabilities
- TI-2026-27142 Improper input validation in Ubiquiti UniFi OS Server KEVCVSS 3.1CRITICAL 10.0
- TI-2026-27141 Path traversal in Ubiquiti UniFi OS Server KEVCVSS 3.1CRITICAL 10.0
- TI-2026-27140 Improper access control in Ubiquiti UniFi OS Server KEVCVSS 3.1CRITICAL 10.0
- TI-2010-05027 On certain Ubiquiti devices, Command Injection exists via a GET request to stainfo.cgi… KEVCVSS 3.1CRITICAL 9.8
- TI-2020-19187 AirControl 1.4.2 - PreAuth Remote Code Execution CVSS 4.0CRITICAL 9.3
- TI-2015-07644 Ubiquiti airOS HTTP(S) unauthenticated arbitrary file upload CVSS 3.0CRITICAL 9.8
Sources
- CVE-2025-23091 · CVE Program
- CVE-2025-23091 · NVD
- FIRST EPSS
- GHSA-j57h-g9hv-4p44 · GitHub Advisory Database · CC BY 4.0
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