CVE-2026-34910
Ubiquiti UniFi OS Improper Input Validation Vulnerability
Published May 21, 2026 · updated Jul 23, 2026 · Ubiquiti UniFi OS
Ubiquiti UniFi OS contains an improper input validation vulnerability which could allow a malicious actor with access to the network to conduct command injection.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
May 21, 2026 · Catalog
Detected
Ubiquiti UniFi OS contains an improper input validation vulnerability which could allow a malicious actor with access to the network to conduct command injection.
Jun 23, 2026 · CISA KEV
Known exploited
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
Jun 26, 2026 · CISA KEV
Remediation due
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
Jul 23, 2026 · Catalog
Updated
Ubiquiti UniFi OS contains an improper input validation vulnerability which could allow a malicious actor with access to the network to conduct command injection.
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.
CISA due date Jun 26, 2026
Affected
- cpe ui/enterprise fortress gateway firmwareversion unspecified
- cpe ui/unifi cloud gateway industrial firmwareversion unspecified
- cpe ui/unifi dream machine firmwareversion unspecified
- cpe ui/unifi dream machine pro firmwareversion unspecified
- cpe ui/unifi dream machine pro max firmwareversion unspecified
- cpe ui/unifi dream machine special edition firmwareversion unspecified
- cpe ui/unifi dream router 7 firmwareversion unspecified
- cpe ui/unifi dream router firmwareversion unspecified
- cpe ui/unifi dream wall firmwareversion unspecified
- cpe ui/unifi express 7 firmwareversion unspecified
- cpe ui/unifi network video recorder firmwareversion unspecified
- cpe ui/unifi os serverversion unspecified
- vendor Ubiquiti UniFi OSversion unspecified
Sources
- CISA KEVConfirmed exploitationCVE-2026-34910
Ubiquiti UniFi OS contains an improper input validation vulnerability which could allow a malicious actor with access to the network to conduct command injection.
cisa.gov - CVE.orgVulnerability recordCVE-2026-34910
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-34910
30-day exploitation probability 45.8%
first.org - NIST NVDVulnerability recordCVE-2026-34910
A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS devices to execute a Command Injection.
nvd.nist.gov