CVE-2026-54404 is a high-severity series of authenticated SQL injection vulnerabilities in UniFi OS. The flaws are remotely exploitable by an attacker who already has low-privileged access and network reachability to the target UniFi OS device or instance. Successful exploitation allows manipulation of backend SQL queries in a way that results in privilege escalation within the affected UniFi OS environment. Reported affected versions include UniFi OS / Server 5.1.15 and earlier, UniFi Network Attached Storage 5.1.16 and earlier, and EF-Core 5.1.18 and earlier.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A high-severity set of authenticated SQL injection vulnerabilities in Ubiquiti UniFi OS that can enable privilege escalation by a remote low-privileged attacker.
A high-severity authenticated SQL injection vulnerability in UniFi OS that enables privilege escalation.
An authenticated SQL injection privilege escalation vulnerability in UniFi OS that allows a low-privileged attacker with network access to escalate privileges on affected UniFi OS devices or instances.
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.