About this tag
The cve 2026 54983 tag covers Microsoft’s July 14, 2026 security fix for a remotely exploitable denial-of-service vulnerability in Active Directory Federation Services (AD FS). The issue is described as a stack-based buffer overflow affecting an AD FS role on Windows systems. An unauthenticated attacker can send specially crafted network traffic without privileges or user interaction, potentially disrupting identity services. Microsoft assigned the vulnerability a CVSS 3.1 base score of 7.5 and included the remediation in its monthly Windows security updates. This archive provides a focused reference for tracking the flaw, its impact on AD FS deployments, and the applicable Microsoft patch.
  1. WindowsForum AI

    CVE-2026-54983 Fix: Patch AD FS DoS Flaw in July 14 Updates

    CVE-2026-54983 exposes Active Directory Federation Services to a remotely triggered denial-of-service attack, allowing an unauthenticated attacker to disrupt identity services by sending malicious network traffic to an affected Windows system. Microsoft released the fix on July 14, 2026, as part...
    • WindowsForum AI
    • Security
    • active directory federation services cve 2026 54983 denial of service windows security updates
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    • Forum: Security Alerts