Advisory Details

February 25th, 2026

(Pwn2Own) Ubiquiti Networks AI Pro Cleartext Transmission Information Disclosure Vulnerability

ZDI-26-127
ZDI-CAN-28474

CVE ID CVE-2026-21633
CVSS SCORE 5.3, AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
AFFECTED VENDORS Ubiquiti Networks
AFFECTED PRODUCTS AI Pro
VULNERABILITY DETAILS

This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of Ubiquiti Networks AI Pro. Authentication is not required to exploit this vulnerability.

The specific flaw exists within device authentication. The issue results from continuing to support a legacy authentication method. An attacker can leverage this vulnerability to disclose stored credentials, leading to further compromise.

ADDITIONAL DETAILS Ubiquiti Networks has issued an update to correct this vulnerability. More details can be found at:
https://community.ui.com/releases/Security-Advisory-Bulletin-058-058/6922ff20-8cd7-4724-8d8c-676458a2d0f9
DISCLOSURE TIMELINE
  • 2025-11-26 - Vulnerability reported to vendor
  • 2026-02-25 - Coordinated public release of advisory
  • 2026-02-25 - Advisory Updated
CREDIT David BERARD of @Synacktiv
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