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Vulnerability record · CVE-2025-27935 · published 4 December 2025

CVE-2025-27935: Missing authentication for critical function vulnerability

The OTP Integration Kit for PingFederate fails to enforce HTTP method validation and state validation properly. The server advances the authentication state without verifying the OTP, thereby bypassing multi-factor authentication.

8.6 CVSS 4.0 High EPSS 0.51% · top 58.9% CWE-306 · Missing authentication for critical function Deferred
8.6CVSS 4.0 base score
0.51%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

The OTP Integration Kit for PingFederate fails to enforce HTTP method validation and state validation properly. The server advances the authentication state without verifying the OTP, thereby bypassing multi-factor authentication.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://support.pingidentity.com/s/article/SECADV051-PingFederate-OTP-Integration-Kit-authentication-bypass
https://www.pingidentity.com/en/resources/downloads/pingfederate.html

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Source: NIST National Vulnerability Database (record CVE-2025-27935), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.