CVE-2026-71337

CVE-2026-71337 is a stack-based buffer overflow (CWE-121; the record also tags CWE-130) in the Windows Storage Management Provider, a component of the Microsoft Windows storage management stack. An authorized, low-privileged local user can trigger the overflow via the provider without any user interaction, and the flaw is scored 7.8 (High) with high impact to confidentiality, integrity, and availability. Successful exploitation allows the attacker to elevate privileges locally and run code with higher privileges on the affected machine. Any Windows installation carrying the affected Storage Management Provider is in scope, though the provided data does not specify affected version ranges. There is no known public proof-of-concept, the flaw is not in CISA's Known Exploited Vulnerabilities catalog, and EPSS estimates roughly a 0.3% probability of exploitation within 30 days, indicating no known exploitation at this time.

What to do: Apply Microsoft's security update for CVE-2026-71337 through Windows Update, WSUS, or Intune as soon as it is available, and verify remediation via your patch-reporting tooling. Prioritize Windows systems where multiple or less-trusted users can log on locally (e.g., RDS hosts and shared servers), since exploitation requires local access; temporarily restricting interactive logon rights on sensitive systems is a reasonable interim measure.