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CVE-2026-77553 is a critical improper access control vulnerability in UniFi Access Application versions 4.3.3 and earlier. A network-accessible, low-privileged actor can exploit insufficient access-control enforcement to escalate privileges on the host device. The vulnerability has a CVSS v3.1 base score of 9.9.
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No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An improper access-control vulnerability in UniFi Access Application that enables a network-accessible, low-privileged attacker to escalate privileges on the host device.
Critical privilege-escalation vulnerability in UniFi Access Application.
Privilege-escalation vulnerability in UniFi Access Application caused by improper access control.
A critical (CVSS 3.1: 9.9) improper access-control vulnerability in Ubiquiti UniFi Access Application that allows a low-privileged attacker with network access to escalate privileges on the host device.
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.