CVE-2026-34908
CRITICAL CISA KEV EPSS 82.4%
Published May 22, 20261mo ago · Modified Jun 24, 20264d ago
10.0 CVSS 3.1
Published May 22, 2026 1mo ago
Last Modified Jun 24, 2026 4d ago
KEV Listed Jun 23, 2026 6d ago
KEV Due Jun 26, 2026 3d overdue
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Changed
Confidentiality High
Integrity High
Availability High
Threat Intelligence
CISA Known Exploited Overdue 3d
- Added
- Jun 23, 2026
- Due
- Jun 26, 2026
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.
EPSS Exploit Probability
82.4% percentile
Exploit & Patch Status
Actively Exploited (KEV)
Patch Available
Weaknesses 1
CWE-284
Affected Products 61
| Vendor | Product | Version | Range |
|---|---|---|---|
| ui | unifi_os_server | * | <5.0.8 |
| ui | unifi_cloud_gateway_industrial_firmware | * | <5.1.12 |
| ui | unifi_cloud_gateway_industrial | * | any |
| ui | unifi_dream_machine_firmware | * | <5.1.12 |
| ui | unifi_dream_machine | * | any |
| ui | unifi_dream_machine_pro_firmware | * | <5.1.12 |
| ui | unifi_dream_machine_pro | * | any |
| ui | unifi_dream_machine_special_edition_firmware | * | <5.1.12 |
| ui | unifi_dream_machine_special_edition | * | any |
| ui | unifi_dream_machine_pro_max_firmware | * | <5.1.12 |
| ui | unifi_dream_machine_pro_max | * | any |
| ui | enterprise_fortress_gateway_firmware | * | <5.1.12 |
| ui | enterprise_fortress_gateway | * | any |
| ui | unifi_dream_wall_firmware | * | <5.1.12 |
| ui | unifi_dream_wall | * | any |
| ui | unifi_dream_router_firmware | * | <5.1.12 |
| ui | unifi_dream_router | * | any |
| ui | unifi_dream_router_7_firmware | * | <5.1.12 |
| ui | unifi_dream_router_7 | * | any |
| ui | unifi_express_7_firmware | * | <5.1.12 |
| ui | unifi_express_7 | * | any |
| ui | unifi_network_video_recorder_firmware | * | <5.1.12 |
| ui | unifi_network_video_recorder | * | any |
| ui | unifi_network_video_recorder_pro_firmware | * | <5.1.12 |
| ui | unifi_network_video_recorder_pro | * | any |
| ui | unifi_network_video_recorder_instant_firmware | * | <5.1.12 |
| ui | unifi_network_video_recorder_instant | * | any |
| ui | enterprise_network_video_recorder_firmware | * | <5.1.12 |
| ui | enterprise_network_video_recorder | * | any |
| ui | unifi_cloud_gateway_ultra_firmware | * | <5.1.12 |
| ui | unifi_cloud_gateway_ultra | * | any |
| ui | unifi_cloud_gateway_max_firmware | * | <5.1.12 |
| ui | unifi_cloud_gateway_max | * | any |
| ui | unifi_cloud_gateway_fiber_firmware | * | <5.1.12 |
| ui | unifi_cloud_gateway_fiber | * | any |
| ui | unifi_dream_router_5g_max_firmware | * | <5.1.12 |
| ui | unifi_dream_router_5g_max | * | any |
| ui | enterprise_network_video_recorder_core_firmware | * | <5.1.12 |
| ui | enterprise_network_video_recorder_core | * | any |
| ui | unifi_cloud_key_plus_firmware | * | <5.1.12 |
| ui | unifi_cloud_key_plus | * | any |
| ui | unifi_cloudkey_firmware | * | <5.1.12 |
| ui | unifi_cloudkey | * | any |
| ui | unifi_cloudkey_enterprise_firmware | * | <5.1.12 |
| ui | unifi_cloudkey_enterprise | * | any |
| ui | unifi_network_video_recorder_g2_firmware | * | <5.1.12 |
| ui | unifi_network_video_recorder_g2 | * | any |
| ui | unifi_network_video_recorder_g2_pro_firmware | * | <5.1.12 |
| ui | unifi_network_video_recorder_g2_pro | * | any |
| ui | unifi_dream_machine_beast_firmware | * | <5.1.11 |
| ui | unifi_dream_machine_beast | * | any |
| ui | unas_2_firmware | * | <5.1.10 |
| ui | unas_2 | * | any |
| ui | unas_4_firmware | * | <5.1.10 |
| ui | unas_4 | * | any |
| ui | unas_pro_firmware | * | <5.1.10 |
| ui | unas_pro | * | any |
| ui | unas_pro_4_firmware | * | <5.1.10 |
| ui | unas_pro_4 | * | any |
| ui | unas_pro_8_firmware | * | <5.1.10 |
| ui | unas_pro_8 | * | any |
References 3
- community.ui.com https://community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cf4-42ab-bd61-cc994445963b
- cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34908
- pwndefend.com https://www.pwndefend.com/2026/06/09/cve-2026-34910-exploitation-itw-building-a-botnet-mirai/
Remediation
- community.ui.com https://community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cf4-42ab-bd61-cc994445963b