CVE-2026-47370: CWE-20 Improper Input Validation in Ubiquiti Inc UniFi OS Server
A malicious actor with access to the network and low privileges could exploit an Improper Input Validation vulnerability found in certain devices running UniFi OS to execute a Command Injection within such UniFi OS devices or instances.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-47370) involves improper input validation in UniFi OS Server by Ubiquiti Inc. An attacker with network access and low privileges can exploit this flaw to execute arbitrary commands on the device, potentially leading to full system compromise. The vulnerability is categorized under CWE-20 and carries a CVSS v3.1 score of 9.9, reflecting critical severity with network attack vector, low attack complexity, no user interaction, and high impact on confidentiality, integrity, and availability. No official remediation or patch information is currently available, and no known exploits in the wild have been reported.
Potential Impact
Successful exploitation can lead to remote command execution by a low-privileged attacker with network access, resulting in complete compromise of the affected UniFi OS Server device. This includes full control over the system, loss of confidentiality, integrity, and availability of the device and potentially the network it manages.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict network access to UniFi OS Server devices to trusted users only and monitor for suspicious activity related to command execution attempts.
CVE-2026-47370: CWE-20 Improper Input Validation in Ubiquiti Inc UniFi OS Server
Description
A malicious actor with access to the network and low privileges could exploit an Improper Input Validation vulnerability found in certain devices running UniFi OS to execute a Command Injection within such UniFi OS devices or instances.
CVSS v3.1
Score 9.9critical
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-47370) involves improper input validation in UniFi OS Server by Ubiquiti Inc. An attacker with network access and low privileges can exploit this flaw to execute arbitrary commands on the device, potentially leading to full system compromise. The vulnerability is categorized under CWE-20 and carries a CVSS v3.1 score of 9.9, reflecting critical severity with network attack vector, low attack complexity, no user interaction, and high impact on confidentiality, integrity, and availability. No official remediation or patch information is currently available, and no known exploits in the wild have been reported.
Potential Impact
Successful exploitation can lead to remote command execution by a low-privileged attacker with network access, resulting in complete compromise of the affected UniFi OS Server device. This includes full control over the system, loss of confidentiality, integrity, and availability of the device and potentially the network it manages.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict network access to UniFi OS Server devices to trusted users only and monitor for suspicious activity related to command execution attempts.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- hackerone
- Date Reserved
- 2026-05-19T15:00:09.320Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a2b7d3f815e7002b8ea08c1
Added to database: 06/12/2026, 03:30:07 UTC
Last enriched: 06/19/2026, 18:24:03 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 245
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