Is CVE-2025-34063 actively exploited?

No active exploitation of CVE-2025-34063 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-34063 be exploited remotely?

Yes. CVE-2025-34063 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-34063?

CVE-2025-34063 has a CVSS score of 10.0 (CRITICAL).

HOME VULNERABILITIESCVE-2025-34063

CRITICAL

CVE-2025-34063

CWE-290Published: July 1, 2025· Updated: Jun 17, 2026

10.0

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2025-34063 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeX

Impact

Confidentiality

Integrity

Availability

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/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:X/V:X/RE:X/U:X