Affects widely deployed UniFi OS networking gear; enables remote RCE, potentially disrupting IT operations.
CVE-2026-34910
Remote command injection on UniFi OS allows RCE.
Is CVE-2026-34910 being exploited?
Yes. CVE-2026-34910 appears in CISA's Known Exploited Vulnerabilities catalog, which means exploitation in the wild has been confirmed and reported. Treat it as active rather than theoretical, and patch it ahead of higher-scoring vulnerabilities that carry no exploitation evidence.
How severe is CVE-2026-34910?
CVE-2026-34910 is rated Critical with a CVSS score of 10.0. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-34910?
Yes. A fix has been recorded for CVE-2026-34910. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-34910 affect?
CVE-2026-34910 affects UniFi OS devices (e.g., UniFi Dream Machine, UniFi Network Controller appliances). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-34910?
Limit network exposure; monitor; patch when released
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution via crafted input; attacker can run arbitrary commands with device privileges over the network.
Immediate action required
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As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.