What is CVE-2026-69674?

CVE-2026-69674 is a medium-severity vulnerability in Microsoft Windows 10 1809, classified under Missing Authentication for Critical Function. CVSS score: 5.5/10. Published 2026-09-08.

How severe is CVE-2026-69674?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Auth bypass in Microsoft Windows 10 1809

CVE-2026-69674

Missing authentication for critical function in Windows Modern Device Management (MDM) allows an authorized attacker to bypass a security feature locally.

Vulnerability class: Broken Authentication

Published 2026-09-08 · last modified 2026-09-22.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (21.8th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 21.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

Windows Modern Device Management (MDM) Security Feature Bypass Vulnerability (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-69674?: CVE-2026-69674 is a medium-severity vulnerability in Microsoft Windows 10 1809, classified under Missing Authentication for Critical Function. CVSS score: 5.5/10. Published 2026-09-08.
How severe is CVE-2026-69674?: Medium severity. CVSS v3 base score is 5.5 out of 10.