What is CVE-2026-70582?

CVE-2026-70582 is a medium-severity vulnerability in Microsoft Windows 10 1607, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 6.4/10. Published 2026-09-08.

How severe is CVE-2026-70582?

Medium severity. CVSS v3 base score is 6.4 out of 10.

Use After Free in Microsoft Windows 10 1607

CVE-2026-70582

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Instrumentation allows an authorized attacker to elevate privileges locally.

Vulnerability class: Race Condition

Published 2026-09-08 · last modified 2026-09-28.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (10.9th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 10.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: -0.000

Affected products

Weakness classification (CWE)

References

Windows Management Instrumentation Elevation of Privilege Vulnerability (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-70582?: CVE-2026-70582 is a medium-severity vulnerability in Microsoft Windows 10 1607, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 6.4/10. Published 2026-09-08.
How severe is CVE-2026-70582?: Medium severity. CVSS v3 base score is 6.4 out of 10.