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CVE-2026-47369 is a critical improper input validation vulnerability in Ubiquiti UniFi OS that allows privilege escalation on affected devices or instances. The flaw is exploitable by an attacker with network access and low-privileged access to the target UniFi OS system, and is scored CVSS v3.1 9.9 with vector AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H. Publicly available information identifies the weakness class as CWE-20 but does not disclose the specific vulnerable endpoint, parameter, function, or protocol handler. Successful exploitation enables escalation from a low-privileged context to higher privileges within the UniFi OS environment. The issue was disclosed in Security Advisory Bulletin 065 and may be especially dangerous when chained with the related path traversal vulnerability CVE-2026-47368, which can remove the low-privilege prerequisite.
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No public exploit code observed for this vulnerability.
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12 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A severe privilege escalation vulnerability in UniFi OS infrastructure related to improper input validation or similar validation failures.
A privilege escalation vulnerability in certain devices running UniFi OS caused by improper input validation.
A Bulletin 065 vulnerability in UniFi OS mentioned as part of a chain with CVE-2026-47368; the content indicates Bulletin 065 includes command injection and privilege escalation flaws, but does not map the exact type to this CVE.
A critical improper input validation privilege escalation vulnerability in Ubiquiti UniFi OS that allows a low-privileged network user to gain elevated privileges on the device, potentially leading to full system compromise.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.