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Critical

Privilege Escalation in Ubiquiti UniFi OS

IdentifiersCVE-2026-47369CWE-20· Improper Input Validation

CVE-2026-47369 is an improper input validation vulnerability affecting certain devices running Ubiquiti UniFi OS. According to the provided content, a malicious actor with network access and only low privileges can exploit validation failures within UniFi OS infrastructure to escalate privileges on the affected UniFi OS device or instance. The available information does not identify the specific vulnerable component, endpoint, or function.

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ANALYST BRIEF

Impact, mitigation & remediation

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Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows privilege escalation within the affected UniFi OS device or instance. The provided CVSS v3.1 vector (AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H) indicates high impact to confidentiality, integrity, and availability, meaning an attacker could gain elevated internal system privileges and potentially compromise the affected system broadly.

Mitigation

If you can’t patch tonight, do this now.

If immediate patching is not possible, reduce exposure by restricting network access to UniFi OS management and internal service interfaces, minimizing the number of low-privileged accounts, enforcing strong access controls, and monitoring for anomalous privilege changes or suspicious activity originating from authenticated low-privilege users. Apply the vendor-provided update as soon as possible, as no specific workaround is provided in the content.

Remediation

Patch, then assume compromise.

Update affected UniFi OS systems in accordance with Ubiquiti Security Advisory Bulletin 065. The provided content specifically recommends updating UniFi OS Server to version 5.1.15. Administrators should consult the vendor advisory for exact affected versions, product applicability, and deployment instructions.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

What this page doesn’t show

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Exposure mapping

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Threat actor evidence

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Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity5

Community discussion across Reddit, Mastodon, and other social sources.