CVE-2026-34910
About
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.
Rainforest analyst review
A broad range of Ubiquiti UniFi OS devices fail to validate input properly, and the flaw resolves into command injection: an attacker with network access supplies crafted input that the device passes into a shell, executing arbitrary operating-system commands on the appliance. There is no authentication requirement noted — network reach to the device is enough to run commands on it.
The affected list spans UniFi gateways and Dream Machines, Cloud Keys, and network and enterprise video recorders — the routing, controller, and camera backbone of countless home, small-business, and mid-size networks, frequently with management surfaces reachable. Command injection on a gateway means control of the network edge itself, and on a recorder it means the surveillance footage. Update UniFi OS to the fixed firmware promptly, keep device management off the public internet and behind proper segmentation, and treat any unit that was network-exposed as a candidate for inspection rather than assuming the update alone settles it.
References
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Frequently asked questions
What is CVE-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.
How severe is CVE-2026-34910?
CVE-2026-34910 carries a CVSS 3.1 base score of 10, rated critical. On the Rainforest Risk Index — which weighs the severity alongside how easy the flaw is to reach and how broad its impact is — it scores 100 out of 100, in the critical band.
How is CVE-2026-34910 exploited?
According to the CVSS vector (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H): attack vector Network, attack complexity Low, privileges required None, user interaction None. Impact on confidentiality High, integrity High and availability High.
Which products are affected by CVE-2026-34910?
Public advisories list the following as affected: enterprise fortress gateway, enterprise fortress gateway firmware, enterprise network video recorder, enterprise network video recorder core, enterprise network video recorder core firmware, enterprise network video recorder firmware, +55. Check the references on this page for the exact versions each vendor confirms.
How do I fix CVE-2026-34910?
Apply the fix the vendor published — the references on this page link to the primary advisories and patches. When patching can't happen right away, reduce the exposure of the affected component and watch it for exploitation attempts. Rainforest customers see this vulnerability correlated to their own assets and prioritized by real exposure, not by score alone.
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