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CVE-2026-22559 is an improper input validation vulnerability in UniFi Network Server affecting version 10.1.85 and earlier. The issue can allow unauthorized access to an account when the targeted account owner is socially engineered into clicking a malicious link. Available reporting also describes it as a symbolic-link-related variant of a portal file-read issue, but the precise vulnerable function and code path are not publicly detailed in the provided information. The vulnerability is network-reachable and requires user interaction, specifically that an administrator or account owner follow an attacker-controlled link, after which insufficient validation of attacker-supplied input can lead to compromise of account access.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A symbolic link variant of the UniFi portal file-read issue that requires an administrator to click a malicious link.
An improper input validation vulnerability in UniFi Network Server that may allow unauthorized access to an account if a user is socially engineered into clicking a malicious link.
A high-severity improper input validation vulnerability in UniFi Network Server / UniFi Network Application that may allow unauthorized account access via a malicious link.
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.