🟠 High | Source: Microsoft Security Response Center
A missing authorisation flaw in Azure DNS allows an unauthenticated attacker to elevate their privileges over a network without requiring any user interaction. This type of vulnerability is particularly dangerous because it can be exploited remotely, potentially allowing attackers to gain elevated control over DNS-related resources within an Azure environment. DNS is a foundational service, so compromise can have wide-reaching consequences including traffic interception and service disruption.
Security Architect’s Take: Review and tighten Azure RBAC assignments scoped to DNS zones and record sets immediately, ensuring least-privilege principles are enforced. Monitor Microsoft’s MSRC advisory for patch availability or mitigation guidance, and consider enabling Azure Defender for DNS to detect anomalous activity whilst remediation is applied.
Original advisory: CVE-2026-58275 Azure DNS Elevation of Privilege Vulnerability