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CVE-2026-77550 is a critical improper neutralization of CRLF sequences vulnerability in certain Ubiquiti UniFi OS devices and instances. A network-reachable attacker can use CRLF injection to bypass UniFi OS authentication controls. The issue has a CVSS v3.1 base score of 10.0.
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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.
13 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Critical authentication-bypass vulnerability in Ubiquiti UniFi OS devices and instances.
An authentication-bypass vulnerability caused by improper neutralization of CRLF sequences in certain devices running UniFi OS. A network-accessible attacker could bypass authentication on affected UniFi OS devices or instances.
A maximum-severity CRLF-injection vulnerability affecting UniFi OS devices, remotely exploitable without privileges or user interaction and potentially enabling device compromise or authentication bypass.
A CVSS 10.0 improper-access-control vulnerability in Ubiquiti UniFi products that could allow an attacker to obtain privileges on the device or application.
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.