CASCACascade Atlas

Evidence dossier

CVE-2026-34908

CVE-2026-34908

68.1–83.1Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

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.

State
PUBLISHED
Published
May 22, 2026
Updated
Jun 24, 2026
Evidence coverage
85%
CISA KEVCatalog member

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.

FIRST EPSS2.45%

2026-07-18 · v2026.06.15 · percentile 82.6%

Source stateNo scored conflict

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

hackeroneoriginal assertion
container

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.

CISA KEVoriginal assertion
observed_exploitation

Ubiquiti UniFi OS Improper Access Control Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.024520000000; percentile 0.825790000000

Applicability

Cited product scope

Trace impact →
Ubiquiti IncEFG
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Ubiquiti IncENVR
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Ubiquiti IncENVR-Core
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Ubiquiti IncExpress 7
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Ubiquiti IncUCG-Fiber
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Ubiquiti IncUCG-Industrial
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Ubiquiti IncUCG-Max
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Ubiquiti IncUCG-Ultra
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Ubiquiti IncUCK
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Ubiquiti IncUCK-Enterprise
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Ubiquiti IncUCKP
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Ubiquiti IncUDM
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Ubiquiti IncUDM-Beast
[{"status": "affected", "version": "0", "lessThan": "5.1.11", "versionType": "semver"}]unknown
Ubiquiti IncUDM-Pro
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Ubiquiti IncUDM-Pro-Max
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Ubiquiti IncUDM-SE
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Ubiquiti IncUDR
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Ubiquiti IncUDR-5G
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Ubiquiti IncUDR7
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Ubiquiti IncUDW
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Ubiquiti IncUNAS-2
[{"status": "affected", "version": "0", "lessThan": "5.1.10", "versionType": "semver"}]unknown
Ubiquiti IncUNAS-4
[{"status": "affected", "version": "0", "lessThan": "5.1.10", "versionType": "semver"}]unknown
Ubiquiti IncUNAS-Pro
[{"status": "affected", "version": "0", "lessThan": "5.1.10", "versionType": "semver"}]unknown
Ubiquiti IncUNAS-Pro-4
[{"status": "affected", "version": "0", "lessThan": "5.1.10", "versionType": "semver"}]unknown
Ubiquiti IncUNAS-Pro-8
[{"status": "affected", "version": "0", "lessThan": "5.1.10", "versionType": "semver"}]unknown
Ubiquiti IncUniFi OS Server
[{"status": "affected", "version": "0", "lessThan": "5.0.8", "versionType": "semver"}]unknown
Ubiquiti IncUNVR
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Ubiquiti IncUNVR-G2
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Ubiquiti IncUNVR-G2-Pro
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Ubiquiti IncUNVR-Instant
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Ubiquiti IncUNVR-Pro
[{"status": "affected", "version": "0", "lessThan": "5.1.12", "versionType": "semver"}]unknown
Unknown vendorUnknown product
cpe:2.3:a:ui:unifi_os_server:*:*:*:*:*:*:*:*; end excluding 5.0.8supported
Unknown vendorUnknown product
cpe:2.3:h:ui:enterprise_fortress_gateway:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:enterprise_network_video_recorder:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:enterprise_network_video_recorder_core:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unas_2:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unas_4:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unas_pro:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unas_pro_4:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unas_pro_8:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unifi_cloud_gateway_fiber:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unifi_cloud_gateway_industrial:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unifi_cloud_gateway_max:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unifi_cloud_gateway_ultra:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unifi_cloudkey:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unifi_cloudkey_enterprise:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unifi_cloud_key_plus:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unifi_dream_machine:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unifi_dream_machine_beast:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unifi_dream_machine_pro:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unifi_dream_machine_pro_max:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unifi_dream_machine_special_edition:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unifi_dream_router:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unifi_dream_router_5g_max:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unifi_dream_router_7:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unifi_dream_wall:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unifi_express_7:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unifi_network_video_recorder:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unifi_network_video_recorder_g2:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unifi_network_video_recorder_g2_pro:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unifi_network_video_recorder_instant:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:ui:unifi_network_video_recorder_pro:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:ui:enterprise_fortress_gateway_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported
Unknown vendorUnknown product
cpe:2.3:o:ui:enterprise_network_video_recorder_core_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported
Unknown vendorUnknown product
cpe:2.3:o:ui:enterprise_network_video_recorder_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unas_2_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.10supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unas_4_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.10supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unas_pro_4_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.10supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unas_pro_8_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.10supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unas_pro_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.10supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unifi_cloud_gateway_fiber_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unifi_cloud_gateway_industrial_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unifi_cloud_gateway_max_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unifi_cloud_gateway_ultra_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unifi_cloudkey_enterprise_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unifi_cloudkey_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unifi_cloud_key_plus_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unifi_dream_machine_beast_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.11supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unifi_dream_machine_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unifi_dream_machine_pro_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unifi_dream_machine_pro_max_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unifi_dream_machine_special_edition_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unifi_dream_router_5g_max_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unifi_dream_router_7_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unifi_dream_router_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unifi_dream_wall_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unifi_express_7_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unifi_network_video_recorder_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unifi_network_video_recorder_g2_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unifi_network_video_recorder_g2_pro_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unifi_network_video_recorder_instant_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported
Unknown vendorUnknown product
cpe:2.3:o:ui:unifi_network_video_recorder_pro_firmware:*:*:*:*:*:*:*:*; end excluding 5.1.12supported

Assessments

CVSS by origin

10.0
support@hackerone.comCVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
10.0
hackeroneCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.