Microsoft Entra unbound token usage from high-risk apps
Description
AlphaSOC detected a Microsoft Entra token originating from an unbound (unmanaged or non-compliant) device context being used to access applications classified as high-risk. Unbound tokens are issued outside of managed device sessions and lack device health attestation signals. When such tokens are used to access sensitive applications, this may indicate that credentials have been exfiltrated from a managed device and are being replayed from an attacker-controlled endpoint.
Impact
Access to high-risk applications with unbound tokens may grant an attacker entry to sensitive business systems including administrative portals, financial platforms, or security tooling. Without device compliance enforcement, the attacker bypasses an important layer of conditional access protection. Depending on the applications accessed, this could result in data exfiltration, configuration changes, privilege escalation, or further compromise of the organization's cloud environment.
Severity
| Severity | Condition |
|---|---|
Medium | Unbound token used to access high-risk applications |
Investigation and Remediation
Review Entra sign-in logs to identify the applications accessed, the token issuance context, and the source network. Verify with the user whether the access was authorized from an unmanaged device. If unauthorized, revoke active sessions and reset credentials. Strengthen conditional access policies for access to high-risk applications. Review the accessed applications for unauthorized changes or data access.