Google Chrome AppBound Encryption Downgrade and Authentication Bypass

Advisories

severity: critical
date: July 2, 2025
Affecting: Chrome 127 - 129
Confirmed in Google Chrome with AppBound Encryption enabled.
Chromium-based browsers if they implement similar COM-based encryption mechanisms.
CVE: CVE-2025-34090 CVE-2025-34091 CVE-2025-34092
CVE type: Protection Mechanism Failure
CVSS: 9
CVSS V4 Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
References: CyberArk Disclosure
Credit: Ari Novick of CyberArk