CVE-2026-87716: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1809

This vulnerability, tracked as CVE-2026-87716, involves a heap-based buffer overflow in the Windows Storage Spaces Controller on Windows 10 Version 1809 and several other specific builds. An attacker without privileges can exploit this flaw remotely to cause a denial of service condition. The CVSS 3.1 vector indicates network attack vector, low attack complexity, no privileges required, no user interaction, and impact limited to availability. Microsoft has published an official security update to remediate this vulnerability.

Successful exploitation results in denial of service (system crash or reboot) over the network without requiring user interaction or privileges. There is no impact on confidentiality or integrity according to the CVSS vector. No known exploits are reported in the wild at this time.

An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for the affected Windows 10 versions to remediate this vulnerability. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-87716 for update details and installation instructions.