CVE-2026-34910

CriticalCVSS 10.0/10Known exploited (CISA KEV)Last modified Jul 23, 2026

Description

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.

Metrics

CVSS 3.1 10.0/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Weakness enumeration

CWE-20

Affected software

Vendor	Product	Versions
Ubiquiti Inc	UniFi OS Server	< 5.0.8
Ubiquiti Inc	UDM	< 5.1.12
Ubiquiti Inc	UDM-Pro	< 5.1.12
Ubiquiti Inc	UDM-SE	< 5.1.12
Ubiquiti Inc	UDM-Pro-Max	< 5.1.12
Ubiquiti Inc	UDM-Beast	< 5.1.11
Ubiquiti Inc	EFG	< 5.1.12
Ubiquiti Inc	UDW	< 5.1.12
Ubiquiti Inc	UDR	< 5.1.12
Ubiquiti Inc	UDR7	< 5.1.12
Ubiquiti Inc	UDR-5G	< 5.1.12
Ubiquiti Inc	Express 7	< 5.1.12
Ubiquiti Inc	UNVR	< 5.1.12
Ubiquiti Inc	UNVR-Pro	< 5.1.12
Ubiquiti Inc	UNVR-Instant	< 5.1.12
Ubiquiti Inc	UNVR-G2	< 5.1.12
Ubiquiti Inc	UNVR-G2-Pro	< 5.1.12
Ubiquiti Inc	ENVR	< 5.1.12
Ubiquiti Inc	ENVR-Core	< 5.1.12
Ubiquiti Inc	UNAS-2	< 5.1.10
Ubiquiti Inc	UNAS-4	< 5.1.10
Ubiquiti Inc	UNAS-Pro	< 5.1.10
Ubiquiti Inc	UNAS-Pro-4	< 5.1.10
Ubiquiti Inc	UNAS-Pro-8	< 5.1.10
Ubiquiti Inc	UCKP	< 5.1.12
Ubiquiti Inc	UCK	< 5.1.12
Ubiquiti Inc	UCK-Enterprise	< 5.1.12
Ubiquiti Inc	UCG-Ultra	< 5.1.12
Ubiquiti Inc	UCG-Max	< 5.1.12
Ubiquiti Inc	UCG-Fiber	< 5.1.12
Ubiquiti Inc	UCG-Industrial	< 5.1.12

References

https://community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cf4-42ab-bd61-cc994445963bPatch, Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34910US Government Resource
https://www.pwndefend.com/2026/06/09/cve-2026-34910-exploitation-itw-building-a-botnet-mirai/Exploit, Third Party Advisory

Timeline

Published: May 22, 2026
Last modified: Jul 23, 2026
Added to CISA KEV: Jun 23, 2026
NVD status: Analyzed

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