token binding

About this tag
Token binding is a security mechanism that ties an authentication token to a specific client or session, preventing token theft and replay attacks. Discussions on WindowsForum.com highlight its role in a critical vulnerability, CVE-2026-20965, which affected Windows Admin Center's Azure SSO integration. The flaw allowed attackers with local admin access on a managed VM to forge a Proof-of-Possession token and impersonate privileged users across the tenant. The patch, released in Windows Admin Center Azure Extension 0.70.00, addressed improper token validation. These threads underscore token binding's importance in securing cloud management tools and Azure Active Directory authentication.
  1. CVE-2026-20965 Patch for Windows Admin Center Azure SSO Token Binding Flaw

    A newly disclosed and patched flaw in Windows Admin Center’s Azure Active Directory Single Sign‑On integration undermined a fundamental trust boundary in cloud management: a local administrator on a single WAC‑managed VM could combine a stolen access token with a forged Proof‑of‑Possession (PoP)...
  2. CVE-2026-20965: Windows Admin Center Azure SSO token binding flaw exposed

    A newly disclosed flaw in Windows Admin Center’s Azure Single Sign‑On flow can let an attacker with local administrator access on a single Azure VM or Azure Arc‑connected host break out of that host and impersonate privileged administrators to control every Windows Admin Center‑managed machine...