# CVE-2025-34063

## Summary

- **CVE ID:** CVE-2025-34063
- **Severity:** CRITICAL
- **CVSS Score:** 10 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H)
- **CWE:** CWE-290
- **Published:** Jul 1, 2025
- **Last Modified:** Mar 12, 2026

## Description

A cryptographic authentication bypass vulnerability exists in OneLogin AD Connector prior to 6.1.5 due to the exposure of a tenant’s SSO JWT signing key via the /api/adc/v4/configuration endpoint. An attacker in possession of the signing key can craft valid JWT tokens impersonating arbitrary users within a OneLogin tenant. The tokens allow authentication to the OneLogin SSO portal and all downstream applications federated via SAML or OIDC. This allows full unauthorized access across the victim’s SaaS environment.

## Affected Products

- One Identity — OneLogin Active Directory Connector (ADC) (0)

## References

- [CNA](https://support.onelogin.com/product-notification/noti-00001768)
- [CNA](https://specterops.io/blog/2025/06/10/onelogin-many-issues-how-i-pivoted-from-a-trial-tenant-to-compromising-customer-signing-keys/)
- [CNA](https://vulncheck.com/advisories/onelogin-ad-connector-account-compromise)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.56%
- **EPSS Percentile:** 44.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._