Vulnerability in Quest One Identity
CVE-2025-56689
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.)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L.
EPSS exploit prediction
EPSS: 0.014 (71.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 71.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.014 · change: +0.000
Affected products
- Quest One Identity — versions 7.5.1.20903
Weakness classification (CWE)
Public proof-of-concept exploits
References
- medium.com/@vigneshrajan54_88115/how-i-found-cve-2025-56689-in-safeguard-for-pr… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-56689?
- CVE-2025-56689 is a medium-severity vulnerability in Quest One Identity, classified under Authentication Bypass by Spoofing. CVSS score: 4.6/10. Published 2025-09-03.
- How severe is CVE-2025-56689?
- Medium severity. CVSS v3 base score is 4.6 out of 10.
- Is CVE-2025-56689 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.