CVE-2026-62710 in Windows
Summary
by MITRE • 08/11/2026
Heap-based buffer overflow in Windows Device Association Service allows an authorized attacker to elevate privileges locally.
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Analysis
by VulDB Data Team • 08/11/2026
A heap-based buffer overflow vulnerability exists within the Windows Device Association Service component that enables authenticated attackers to achieve local privilege escalation. This flaw originates from insufficient input validation and memory management practices within the service's handling of device association requests. The vulnerability manifests when the service processes malformed or excessively large data structures during device enumeration and registration operations, leading to memory corruption in heap-allocated buffers. The technical implementation involves improper bounds checking mechanisms that fail to validate the size of incoming device information structures before copying them into fixed-size heap buffers.
The operational impact of this vulnerability extends beyond simple privilege escalation as it provides attackers with a persistent foothold on compromised systems while maintaining elevated privileges. Attackers can leverage this weakness through legitimate user accounts to gain system-level access without requiring additional exploitation vectors or complex attack chains. The service operates with high privileges typically associated with system-level processes, making successful exploitation particularly dangerous for maintaining long-term access and conducting further malicious activities. This vulnerability aligns with CWE-121 heap-based buffer overflow classification and represents a direct pathway for attackers to bypass standard user permission boundaries.
Security professionals should implement immediate mitigations including system updates from Microsoft security patches that address the specific heap corruption issue within the Device Association Service. Additional protective measures involve restricting unnecessary access to device association APIs through proper access control lists and monitoring for suspicious service interactions. The ATT&CK framework categorizes this vulnerability under privilege escalation techniques with specific relevance to T1068 and T1547.001 tactics, emphasizing the need for comprehensive endpoint protection solutions that monitor service behavior and detect anomalous heap manipulation patterns. Organizations should also consider implementing application whitelisting policies that restrict execution of unauthorized binaries capable of exploiting this memory corruption vulnerability while maintaining audit logging of device association service activities to enable threat detection through behavioral analysis.