CVE-2026-34910
Ubiquiti UniFi OS Improper Input Validation Vulnerability
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.
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. Deadline for federal agencies: 2026-06-26.
9 articles across 5 outlets · first covered Jun 23, 2026 · latest Jun 24, 2026
Coverage timeline
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CISA urges patching as hackers exploit critical Ubiquiti flawswww.securityweek.com · Jun 24, 2026
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CISA flags Ubiquiti, Lantronix flaws; urges US patch by June 2026securityaffairs.com · Jun 24, 2026
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SmartRAT ClickFix targets Brazilian banks with AI spoofed domainssecurityonline.info · Jun 24, 2026
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Lantronix, UniFi flaws surface as Outlook Mac reply glitch seensecurityonline.info · Jun 24, 2026
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Google Search Now Saves Your Uploaded Media to Train AIsecurityonline.info · Jun 24, 2026
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Flaw in AVer PTC500S cameras allows remote code executionsecurityonline.info · Jun 24, 2026
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CISA Adds Four Exploited UniFi OS and Lantronix Flaws to KEV Catalogsecurityonline.info · Jun 24, 2026
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CISA flags active exploit in Ubiquiti UniFi OS CVE-2026-34910www.cisa.gov · Jun 23, 2026
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CISA Flags Critical UniFi OS Flaw as Actively Exploited, No Patchcisa.gov · Jun 23, 2026