CVE-2026-34911
HighCVSS 7.7Exploitation Probability (EPSS)
Low risk49th percentile - higher than 49% of all known CVEs
Summary
A path traversal vulnerability has been found in UniFi OS devices that can be exploited by an actor with network access and low privileges. It allows access to files on the underlying system that could be manipulated to obtain sensitive information.
Risk Assessment
An attacker can access sensitive data such as configurations or keys, potentially leading to further attacks on the network infrastructure.
Recommendation
Update UniFi OS to the latest version and restrict network access to devices to trusted hosts only.
Other vulnerabilities in UniFi OS
See all- CVE-2026-77550Critical
An attacker with network access could exploit an Improper Neutralization of CRLF Sequences vulnerability in certain devices running UniFi OS to bypass authentication to such UniFi OS devices or instances.
- CVE-2026-77549Critical
An attacker with network access and under certain conditions could exploit an Improper Neutralization of CRLF Sequences vulnerability in certain devices running UniFi OS to bypass authentication to such UniFi OS devices or instances.
- CVE-2026-77545Critical
An attacker with network access, low privileges, and under certain conditions can exploit an active debug code vulnerability in devices running UniFi OS to escalate privileges within those devices or instances.
- CVE-2026-77536Critical
An attacker with network access and low privileges could exploit an Improper Access Control vulnerability in devices running UniFi OS to escalate privileges within such devices or instances.
- CVE-2026-77534Critical
An attacker with network access and low privileges could exploit an Improper Access Control vulnerability in devices running UniFi OS to escalate privileges within such devices or instances.
- CVE-2026-55116Critical
A vulnerability in UniFi OS allows unauthorized changes to devices by an attacker with network access under certain network configurations.
- CVE-2026-54402Critical
A vulnerability in UniFi OS allows an attacker with network access and low privileges to execute command injection on the host device due to improper input validation.
- CVE-2026-47370Critical
Certain devices running UniFi OS are vulnerable to improper input validation, allowing a malicious actor with low privileges to execute a Command Injection attack.
- CVE-2026-47369Critical
A vulnerability related to improper input validation exists in devices running UniFi OS, which could be exploited by a malicious actor with low privileges to escalate privileges.
- CVE-2026-34910CriticalActively exploited
Command Injection vulnerability in UniFi OS devices. Improper input validation allows an attacker with network access to execute arbitrary system commands.
Original NVD description (English source)
A malicious actor with access to the network and low privileges could exploit a Path Traversal vulnerability found in UniFi OS devices to access files on the underlying system that could be manipulated to obtain sensitive information.