CVE-2026-50470 in Windows
Summary
by MITRE • 07/14/2026
Out-of-bounds read in Windows Network Policy Server SNMP allows an unauthorized attacker to disclose information over a network.
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Analysis
by VulDB Data Team • 07/15/2026
The vulnerability under discussion represents a critical out-of-bounds read condition within the Windows Network Policy Server SNMP implementation that exposes sensitive information to unauthorized network actors. This flaw exists within the Simple Network Management Protocol subsystem responsible for managing network devices and services through the Network Policy Server functionality. The vulnerability stems from insufficient input validation and boundary checking mechanisms when processing SNMP requests, allowing attackers to manipulate memory access patterns beyond allocated buffer boundaries.
This technical weakness creates a pathway for remote code execution and information disclosure attacks by enabling malicious actors to craft specially formatted SNMP packets that trigger memory corruption behaviors. The flaw specifically affects the handling of certain SNMP variable bindings and trap messages processed by the Network Policy Server component. Attackers can leverage this vulnerability to read arbitrary memory locations, potentially extracting sensitive data such as authentication credentials, system configurations, or proprietary information stored in memory regions adjacent to the vulnerable code paths. The out-of-bounds read behavior manifests through improper validation of packet lengths and structure parameters within the SNMP processing pipeline.
The operational impact of this vulnerability extends beyond simple information disclosure to create potential escalation pathways for more severe attacks. Network administrators face significant risk as attackers could use this vulnerability to gather intelligence about network infrastructure, identify system configurations, or discover other potential attack vectors within the enterprise environment. The vulnerability affects Windows systems running Network Policy Server functionality, particularly those configured to process SNMP traffic from untrusted networks. This creates a substantial security exposure for organizations relying on SNMP-based network management solutions, as the attack surface expands to include any network segment where SNMP communication is permitted.
Mitigation strategies should prioritize immediate patch deployment through Microsoft security updates addressing the specific memory handling flaws in the SNMP implementation. Network segmentation and access control measures must be implemented to restrict SNMP traffic to trusted administrative networks only. The principle of least privilege should be enforced by limiting SNMP service permissions and disabling unnecessary SNMP features on systems that do not require network management capabilities. Organizations should implement monitoring solutions to detect anomalous SNMP traffic patterns that may indicate exploitation attempts, while also configuring firewalls to restrict SNMP port access to authorized management stations only.
This vulnerability aligns with CWE-125 out-of-bounds read classifications and represents a typical example of memory safety issues commonly found in network protocol implementations. The attack vector follows standard ATT&CK techniques for information gathering through network reconnaissance, specifically targeting the network infrastructure components that provide system visibility. According to industry best practices, this vulnerability should be prioritized for immediate remediation as it provides attackers with direct access to sensitive system information without requiring elevated privileges or complex exploitation chains. Security teams must conduct comprehensive assessments of their SNMP configurations and ensure proper network access controls are in place to prevent unauthorized discovery of vulnerable systems.