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CVE-2026-47369 Ubiquiti Inc CVE debrief

CVE-2026-47369 is a critical vulnerability with a CVSS score of 9.9, affecting certain devices running UniFi OS. The vulnerability is caused by an Improper Input Validation issue, which allows a malicious actor with access to the network and low privileges to escalate privileges within UniFi OS devices or instances. The vulnerability was published on [cvePublishedAt](https://www.cve.org/CVERecord?id=CVE-2026-47369) and last modified on [cveModifiedAt](https://nvd.nist.gov/vuln/detail/CVE-2026-47369).

Vendor
Ubiquiti Inc
Product
UniFi OS Server
CVSS
CRITICAL 9.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-12
Original CVE updated
2026-06-12
Advisory published
2026-06-12
Advisory updated
2026-06-12

Who should care

Administrators and users of UniFi OS devices should be aware of this vulnerability and take necessary steps to mitigate it.

Technical summary

The vulnerability is caused by an Improper Input Validation issue in UniFi OS devices. This allows a malicious actor with access to the network and low privileges to escalate privileges within UniFi OS devices or instances. The CVSS vector for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Defensive priority

High

Recommended defensive actions

  • Apply patches or updates provided by the vendor as soon as possible.
  • Restrict access to UniFi OS devices to only necessary personnel.
  • Monitor network activity for suspicious behavior.

Evidence notes

The vendor and product information is currently unknown, but it is believed to be related to Ui.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-47369 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-47369

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-47369 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-47369

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://community.ui.com/releases/Security-Advisory-Bulletin-065-065/aa46a22b-fc43-4eae-9382-6fc8feda967a

    [email protected]

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.