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CVE-2019-25651 is a cryptographic weakness in Ubiquiti UniFi Network Controller and multiple UniFi device firmware lines that use AES-CBC for device-to-controller communication. Affected versions include UniFi Network Controller prior to 5.10.12, excluding 5.6.42, UAP firmware prior to 4.0.6, UAP-AC, UAP-AC v2, and UAP-AC Outdoor firmware prior to 3.8.17, USW firmware prior to 4.0.6, and USG firmware prior to 4.4.34. The implementation relies on AES-CBC in a manner that introduces cryptographic weaknesses, allowing an attacker who captures sufficient encrypted traffic to recover encryption keys. Once the keys are derived, the attacker can decrypt and manipulate controller-to-device management communications, undermining the trust model between UniFi infrastructure components.
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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.
If you can’t patch tonight, do this now.
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.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A historical information disclosure vulnerability in the UniFi Network Controller mentioned as background on Ubiquiti's security history.
A legacy Ubiquiti vulnerability involving weak AES-CBC encryption, mentioned only as background context.
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.