actor tokens

  1. CVE-2025-55241 Entra ID Flaw Lets Attacker Impersonate Tenants with Actor Tokens

    A newly disclosed flaw in Microsoft Entra ID — tracked as CVE-2025-55241 — exposed a fragile seam in cloud identity where undocumented internal tokens and a legacy API’s weak validation combined to create a near‑universal tenant takeover vector; Microsoft has patched the defect, but the incident...
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    • actor tokens azure ad graph cloud security entra id identity hygiene identity security legacy api tenant isolation
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    • Forum: Windows News