🟠 High | Source: Microsoft Security Response Center
CVE-2026-9080 is a Use-After-Free (UAF) vulnerability triggered during a pause in a socket callback, which can allow an attacker to execute arbitrary code or cause a system crash by exploiting memory that has already been freed. UAF vulnerabilities are particularly dangerous because they can be leveraged to corrupt memory and potentially escalate privileges or achieve remote code execution. This vulnerability affects Azure-hosted workloads and warrants prompt attention from teams running network-facing services.
Security Architect’s Take: Prioritise patching any affected Azure resources as soon as Microsoft releases a fix, and in the interim consider restricting network exposure of vulnerable services using Network Security Groups or Azure Firewall to reduce the attack surface.
Original advisory: CVE-2026-9080 UAF after pause in socket callback