CVE-2025-56689: Quest One Identity

Medium severity, CVSS 4.6. EPSS: 1.4% chance of exploitation in the next 30 days.

One Identity by Quest Safeguard for Privileged Passwords Appliance 7.5.1.20903 is vulnerable to One Time Password (OTP)/Multifactor Authentication (MFA) bypass using response manipulation. An attacker who intercepts or captures a valid OTP response can bypass the OTP verification step by replaying the same response. NOTE: this is disputed by the Supplier because, by design, the product successfully authenticates a client that possesses a cookie whose validity time interval includes the current time, and thus authentication after any type of "interception" is not a violation of the security model. (The cookie has the HttpOnly attribute.)

Affected products

• Quest One Identity: version 7.5.1.20903 only

Published 2025-09-03. Last modified 2026-06-17.