CVE-2026-34908
Summary
| CVE | CVE-2026-34908 |
|---|---|
| State | PUBLISHED |
| Assigner | hackerone |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-22 02:16:34 UTC |
| Updated | 2026-06-24 14:50:41 UTC |
| Description | A malicious actor with access to the network could exploit an Improper Access Control vulnerability found in UniFi OS devices to make unauthorized changes to the system. |
Risk And Classification
Primary CVSS: v3.1 10 CRITICAL from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS: 0.008600000 probability, percentile 0.537450000 (date 2026-06-23)
CISA KEV: Listed on 2026-06-23; due 2026-06-26; ransomware use Unknown
Problem Types: CWE-284 | CWE-284 CWE-284 Improper Access Control - Generic
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 10 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| 3.1 | CNA | DECLARED | 10 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
ChangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CISA Known Exploited Vulnerability
| Vendor | Ubiquiti |
|---|---|
| Product | UniFi OS |
| Name | Ubiquiti UniFi OS Improper Access Control Vulnerability |
| Required Action | Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. |
| Notes | https://community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cf4-42ab-bd61-cc994445963b ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-34908 |
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Hardware | Ui | Enterprise Fortress Gateway | - | All | All | All |
| Operating System | Ui | Enterprise Fortress Gateway Firmware | All | All | All | All |
| Hardware | Ui | Enterprise Network Video Recorder | - | All | All | All |
| Hardware | Ui | Enterprise Network Video Recorder Core | - | All | All | All |
| Operating System | Ui | Enterprise Network Video Recorder Core Firmware | All | All | All | All |
| Operating System | Ui | Enterprise Network Video Recorder Firmware | All | All | All | All |
| Hardware | Ui | Unas 2 | - | All | All | All |
| Operating System | Ui | Unas 2 Firmware | All | All | All | All |
| Hardware | Ui | Unas 4 | - | All | All | All |
| Operating System | Ui | Unas 4 Firmware | All | All | All | All |
| Hardware | Ui | Unas Pro | - | All | All | All |
| Hardware | Ui | Unas Pro 4 | - | All | All | All |
| Operating System | Ui | Unas Pro 4 Firmware | All | All | All | All |
| Hardware | Ui | Unas Pro 8 | - | All | All | All |
| Operating System | Ui | Unas Pro 8 Firmware | All | All | All | All |
| Operating System | Ui | Unas Pro Firmware | All | All | All | All |
| Hardware | Ui | Unifi Cloudkey | - | All | All | All |
| Hardware | Ui | Unifi Cloudkey Enterprise | - | All | All | All |
| Operating System | Ui | Unifi Cloudkey Enterprise Firmware | All | All | All | All |
| Operating System | Ui | Unifi Cloudkey Firmware | All | All | All | All |
| Hardware | Ui | Unifi Cloud Gateway Fiber | - | All | All | All |
| Operating System | Ui | Unifi Cloud Gateway Fiber Firmware | All | All | All | All |
| Hardware | Ui | Unifi Cloud Gateway Industrial | - | All | All | All |
| Operating System | Ui | Unifi Cloud Gateway Industrial Firmware | All | All | All | All |
| Hardware | Ui | Unifi Cloud Gateway Max | - | All | All | All |
| Operating System | Ui | Unifi Cloud Gateway Max Firmware | All | All | All | All |
| Hardware | Ui | Unifi Cloud Gateway Ultra | - | All | All | All |
| Operating System | Ui | Unifi Cloud Gateway Ultra Firmware | All | All | All | All |
| Hardware | Ui | Unifi Cloud Key Plus | - | All | All | All |
| Operating System | Ui | Unifi Cloud Key Plus Firmware | All | All | All | All |
| Hardware | Ui | Unifi Dream Machine | - | All | All | All |
| Hardware | Ui | Unifi Dream Machine Beast | - | All | All | All |
| Operating System | Ui | Unifi Dream Machine Beast Firmware | All | All | All | All |
| Operating System | Ui | Unifi Dream Machine Firmware | All | All | All | All |
| Hardware | Ui | Unifi Dream Machine Pro | - | All | All | All |
| Operating System | Ui | Unifi Dream Machine Pro Firmware | All | All | All | All |
| Hardware | Ui | Unifi Dream Machine Pro Max | - | All | All | All |
| Operating System | Ui | Unifi Dream Machine Pro Max Firmware | All | All | All | All |
| Hardware | Ui | Unifi Dream Machine Special Edition | - | All | All | All |
| Operating System | Ui | Unifi Dream Machine Special Edition Firmware | All | All | All | All |
| Hardware | Ui | Unifi Dream Router | - | All | All | All |
| Hardware | Ui | Unifi Dream Router 5g Max | - | All | All | All |
| Operating System | Ui | Unifi Dream Router 5g Max Firmware | All | All | All | All |
| Hardware | Ui | Unifi Dream Router 7 | - | All | All | All |
| Operating System | Ui | Unifi Dream Router 7 Firmware | All | All | All | All |
| Operating System | Ui | Unifi Dream Router Firmware | All | All | All | All |
| Hardware | Ui | Unifi Dream Wall | - | All | All | All |
| Operating System | Ui | Unifi Dream Wall Firmware | All | All | All | All |
| Hardware | Ui | Unifi Express 7 | - | All | All | All |
| Operating System | Ui | Unifi Express 7 Firmware | All | All | All | All |
| Hardware | Ui | Unifi Network Video Recorder | - | All | All | All |
| Operating System | Ui | Unifi Network Video Recorder Firmware | All | All | All | All |
| Hardware | Ui | Unifi Network Video Recorder G2 | - | All | All | All |
| Operating System | Ui | Unifi Network Video Recorder G2 Firmware | All | All | All | All |
| Hardware | Ui | Unifi Network Video Recorder G2 Pro | - | All | All | All |
| Operating System | Ui | Unifi Network Video Recorder G2 Pro Firmware | All | All | All | All |
| Hardware | Ui | Unifi Network Video Recorder Instant | - | All | All | All |
| Operating System | Ui | Unifi Network Video Recorder Instant Firmware | All | All | All | All |
| Hardware | Ui | Unifi Network Video Recorder Pro | - | All | All | All |
| Operating System | Ui | Unifi Network Video Recorder Pro Firmware | All | All | All | All |
| Application | Ui | Unifi Os Server | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Ubiquiti Inc | UniFi OS Server | affected 5.0.8 semver | Not specified |
| CNA | Ubiquiti Inc | UDM | affected 5.1.12 semver | Not specified |
| CNA | Ubiquiti Inc | UDM-Pro | affected 5.1.12 semver | Not specified |
| CNA | Ubiquiti Inc | UDM-SE | affected 5.1.12 semver | Not specified |
| CNA | Ubiquiti Inc | UDM-Pro-Max | affected 5.1.12 semver | Not specified |
| CNA | Ubiquiti Inc | UDM-Beast | affected 5.1.11 semver | Not specified |
| CNA | Ubiquiti Inc | EFG | affected 5.1.12 semver | Not specified |
| CNA | Ubiquiti Inc | UDW | affected 5.1.12 semver | Not specified |
| CNA | Ubiquiti Inc | UDR | affected 5.1.12 semver | Not specified |
| CNA | Ubiquiti Inc | UDR7 | affected 5.1.12 semver | Not specified |
| CNA | Ubiquiti Inc | UDR-5G | affected 5.1.12 semver | Not specified |
| CNA | Ubiquiti Inc | Express 7 | affected 5.1.12 semver | Not specified |
| CNA | Ubiquiti Inc | UNVR | affected 5.1.12 semver | Not specified |
| CNA | Ubiquiti Inc | UNVR-Pro | affected 5.1.12 semver | Not specified |
| CNA | Ubiquiti Inc | UNVR-Instant | affected 5.1.12 semver | Not specified |
| CNA | Ubiquiti Inc | UNVR-G2 | affected 5.1.12 semver | Not specified |
| CNA | Ubiquiti Inc | UNVR-G2-Pro | affected 5.1.12 semver | Not specified |
| CNA | Ubiquiti Inc | ENVR | affected 5.1.12 semver | Not specified |
| CNA | Ubiquiti Inc | ENVR-Core | affected 5.1.12 semver | Not specified |
| CNA | Ubiquiti Inc | UNAS-2 | affected 5.1.10 semver | Not specified |
| CNA | Ubiquiti Inc | UNAS-4 | affected 5.1.10 semver | Not specified |
| CNA | Ubiquiti Inc | UNAS-Pro | affected 5.1.10 semver | Not specified |
| CNA | Ubiquiti Inc | UNAS-Pro-4 | affected 5.1.10 semver | Not specified |
| CNA | Ubiquiti Inc | UNAS-Pro-8 | affected 5.1.10 semver | Not specified |
| CNA | Ubiquiti Inc | UCKP | affected 5.1.12 semver | Not specified |
| CNA | Ubiquiti Inc | UCK | affected 5.1.12 semver | Not specified |
| CNA | Ubiquiti Inc | UCK-Enterprise | affected 5.1.12 semver | Not specified |
| CNA | Ubiquiti Inc | UCG-Ultra | affected 5.1.12 semver | Not specified |
| CNA | Ubiquiti Inc | UCG-Max | affected 5.1.12 semver | Not specified |
| CNA | Ubiquiti Inc | UCG-Fiber | affected 5.1.12 semver | Not specified |
| CNA | Ubiquiti Inc | UCG-Industrial | affected 5.1.12 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cf4-42a... | [email protected] | community.ui.com | Patch, Vendor Advisory |
| www.cisa.gov/known-exploited-vulnerabilities-catalog | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | www.cisa.gov | US Government Resource |
| www.pwndefend.com/2026/06/09/cve-2026-34910-exploitation-itw-building-a-botnet-... | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | www.pwndefend.com | Exploit, Third Party Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
| CISA Known Exploited Vulnerabilities catalog | CISA | www.cisa.gov | kev |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| ADP | 2026-06-23T00:00:00.000Z | CVE-2026-34908 added to CISA KEV |
There are currently no legacy QID mappings associated with this CVE.