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Microsoft hallmark logoMicrosoftAnalysis1 min read

Microsoft Entra Device Registration patches critical privilege escalation flaw

Topographic elevation contour card for Microsoft Entra Device Registration patches critical privilege escalation flaw

What happened.Microsoft released a security advisory addressing a maximum-severity authorization bypass vulnerability in Microsoft Entra Device Registration.

Why it matters.Modern enterprise security architectures rely on device registration services to establish trusted identity perimeters. When authorization checks accept untrusted cryptographic parameters during device enrollment, attackers bypass multi-factor conditional access controls and escalate privileges to global tenant administrators. Cloud security teams should review tenant audit logs for unauthorized device additions. Identity administrators must verify continuous device compliance evaluations across corporate directories.

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Source:Microsoft (opens in a new tab)
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Decision brief card for Cisco patches authorization bypass in Identity Services Engine
04Cisco hallmark logoCiscoAnalysis1 min read

Cisco patches authorization bypass in Identity Services Engine

What happened.Cisco published security advisory cisco-sa-ise-cert-mE9BD5GO detailing an authorization bypass vulnerability in Identity Services Engine software.

Why it matters.Endpoint identity certificates authenticate managed devices onto corporate wireless and wired network segments. When authorization checks fail on identity appliances, unauthenticated attackers harvest trusted certificates to spoof legitimate enterprise endpoints. Network security teams must verify installed ISE releases and install updated packages. Organizations should implement continuous mutual authentication checks to prevent spoofed client connections.

  • Vulnerability mechanics: Tracked as CVE-2026-20241 with a CVSS base score of 5.3, the defect resides in the authorization verification subsystem of Cisco ISE.
  • Certificate disclosure: Unauthenticated remote attackers can craft specific network requests to obtain internal endpoint identity certificates without valid credentials.
  • Affected products: The issue affects Cisco ISE and Cisco ISE Passive Identity Connector running vulnerable software releases.
  • Disclosure finality: Cisco noted this advisory concludes its scheduled 2026 publications as part of its transition to a risk-based disclosure model resuming in January 2027.
  • Remediation guidance: Cisco published software maintenance fixes and advised enterprise network administrators to apply available patch bundles.
Official Source:Cisco
Decision brief card for Cisco patches authorization bypass in Identity Services Engine
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Source:Cisco (opens in a new tab)