Paper/Archive/CVE-2025-34063

CVE-2025-34063

One Identity OneLogin Active Directory Connector (ADC) — OneLogin AD Connector JWT Authentication Bypass via Exposed Signing Key

EPSS 0.6%public exploit CVSS 10.0

critical.is priorityof 100

CVSS 10.0 (CNA)10.0 / 10 × 3030.0 Not in CISA KEV+300.0 EPSS percentile 49.3.493 × 209.9 Exploit: SSVC poc+1010.0 SSVC exploitation: poc+100.0

Description · from the CVE record

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

ProductAffectedFixed inSource

OneLogin Active Directory Connector (ADC)< 6.1.56.1.5CNA

Scores by source

VulnCheck (CNA)10.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

patchsupport.onelogin.com/product-notification/noti-00001768 writeupspecterops.io/blog/2025/06/10/onelogin-many-issues-how-i-pivoted-from-a-trial-tenant-to-compromising-customer-signing-keys writeupvulncheck.com/advisories/onelogin-ad-connector-account-compromise