CVE-2020-1579 in Windows
Summary
by MITRE
An elevation of privilege vulnerability exists when the Windows Function Discovery SSDP Provider improperly handles memory. To exploit this vulnerability, an attacker would first have to gain execution on the victim system. An attacker could then run a specially crafted application to elevate privileges. The security update addresses the vulnerability by correcting how the Windows Function Discovery SSDP Provider handles memory.
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Analysis
by VulDB Data Team • 02/24/2026
The vulnerability identified as CVE-2020-1579 represents a critical elevation of privilege flaw within the Windows Function Discovery SSDP Provider component. This vulnerability falls under the CWE-125 vulnerability type, which describes out-of-bounds read conditions that can lead to privilege escalation. The Windows Function Discovery SSDP Provider is responsible for managing network discovery services using the Simple Service Discovery Protocol, making it a critical component for device and service discovery within Windows environments. The flaw manifests when the provider improperly handles memory allocation and deallocation processes during SSDP communication operations.
The exploitation of this vulnerability requires an attacker to first achieve execution privileges on the target system, typically through social engineering, phishing attacks, or other initial compromise techniques. Once execution is achieved, the attacker can execute a specially crafted application that triggers the memory handling flaw within the SSDP provider. This allows the malicious code to escalate privileges from the current user context to SYSTEM level access, providing complete control over the affected system. The attack vector aligns with ATT&CK technique T1068 which covers the abuse of elevated privileges through local privilege escalation.
The technical impact of this vulnerability extends beyond simple privilege escalation as it affects the fundamental security model of Windows operating systems. The SSDP provider is designed to handle multicast communication for service discovery, but the improper memory handling creates opportunities for arbitrary code execution with elevated privileges. This vulnerability is particularly dangerous because it can be exploited through legitimate network discovery services, making detection more challenging for security monitoring systems. The memory handling flaw likely involves buffer overflows, use-after-free conditions, or improper memory validation during SSDP packet processing.
Organizations affected by this vulnerability face significant operational risks including complete system compromise, data exfiltration, and lateral movement capabilities. The vulnerability affects multiple Windows versions including Windows 10, Windows Server 2016, and Windows Server 2019, making it a widespread concern across enterprise environments. The security update provided by Microsoft addresses the issue by correcting the memory handling procedures within the Function Discovery SSDP Provider, implementing proper bounds checking, and ensuring appropriate memory allocation patterns. System administrators should prioritize patching this vulnerability as it represents a high-value target for threat actors seeking persistent access to networked systems.
Mitigation strategies should include immediate deployment of the Microsoft security update, network monitoring for unusual SSDP traffic patterns, and implementation of network segmentation to limit discovery service access. The vulnerability demonstrates the importance of proper memory management in system services and highlights the need for comprehensive security testing of discovery and network service components. Organizations should also consider implementing runtime protection mechanisms and endpoint detection solutions that can identify anomalous behavior patterns associated with privilege escalation attempts. The flaw underscores the necessity of maintaining up-to-date security patches and proper vulnerability management processes to prevent exploitation of similar memory handling issues in other system components.