What is the CVSS score of CVE-2026-21536?

CVE-2026-21536 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.4%.

Which versions of Devices Pricing Program are affected by CVE-2026-21536?

A critical remote code execution vulnerability (CVE-2026-21536, CVSS 9.8) affects Microsoft Devices Pricing Program with no available patch.. A patch is available.

How to fix or mitigate CVE-2026-21536?

Within 24 hours: Inventory all systems running Microsoft Devices Pricing Program and isolate affected assets from production networks if operationally feasible. Within 7 days: Implement network segmentation to restrict access to vulnerable systems, enforce multi-factor authentication for all administrative access, and disable the Pricing Program service if business operations permit. Within 30 days: Establish continuous monitoring for exploitation attempts, coordinate with Microsoft on patch timeline, and develop a formal remediation plan including potential system replacement or upgrade when patches become available.