CVE-2026-62730 in Windows
Summary
by MITRE • 08/11/2026
Buffer over-read in Windows Wired AutoConfig Service allows an authorized attacker to disclose information locally.
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Analysis
by VulDB Data Team • 08/11/2026
This vulnerability resides within the Windows Wired AutoConfig service which manages network connections for wired networks on windows systems. The flaw manifests as a buffer over-read condition that occurs when processing specific network configuration data. An attacker with local authenticated access can exploit this weakness by crafting malicious input that exceeds the allocated buffer space, causing the service to read memory beyond its intended boundaries. This particular vulnerability falls under the common weakness enumeration category of CWE-125 which specifically addresses out-of-bounds read conditions in software implementations.
The technical execution of this attack requires an attacker to already possess legitimate user credentials on the target system since the vulnerability is local in nature and does not involve network-based exploitation. When the Wired AutoConfig service processes malformed network configuration data, it fails to properly validate input boundaries before reading from memory regions that extend beyond allocated buffer limits. This over-read behavior can result in the disclosure of sensitive information stored in adjacent memory locations including potentially confidential system data, credentials, or other proprietary information that may be accessible through the memory dump.
The operational impact of this vulnerability extends beyond simple information disclosure as it can provide attackers with valuable insights into the target system's memory structure and potentially expose sensitive data that could aid in further exploitation attempts. The disclosed information might include pointers to system resources, credential material, or other confidential data that could be leveraged in subsequent attacks. This type of vulnerability represents a significant concern for enterprise environments where local privilege escalation opportunities can lead to broader compromise of network infrastructure.
Mitigation strategies should focus on implementing proper input validation and boundary checking mechanisms within the Wired AutoConfig service implementation. System administrators should ensure that all windows systems receive timely security updates from microsoft that address this specific vulnerability. Additionally, organizations should consider applying least privilege principles to limit local user access where possible, as well as monitoring for unusual network configuration activities that might indicate exploitation attempts. The attack pattern aligns with techniques described in the attack tactic of privilege escalation and information gathering within the attack framework, specifically targeting local system services that handle network configuration data.
The vulnerability demonstrates the importance of robust memory management practices in service-oriented applications, particularly those handling user-provided or system-generated configuration data. It highlights how seemingly minor implementation flaws in core operating system components can create significant security risks when exploited by authenticated attackers. Regular security assessments and code reviews focusing on buffer management and input validation should be implemented to prevent similar issues from emerging in other system services. Organizations should also consider implementing additional monitoring and logging capabilities around network configuration changes that might indicate exploitation attempts or unauthorized modifications to system settings.
Microsoft has addressed this vulnerability through regular security updates, and system administrators should ensure their environments are patched promptly to mitigate the risk of exploitation. The remediation process typically involves applying the latest windows updates which include patches specifically designed to correct buffer over-read conditions in the affected service components. Continuous monitoring for anomalous behavior in network configuration services remains essential as organizations work to maintain secure operating environments while managing legacy system configurations that may be more susceptible to such vulnerabilities.