What is CVE-2026-44810?

CVE-2026-44810 is a high-severity vulnerability in Microsoft Windows_11_23h2, classified under Improper Authentication. CVSS score: 8.4/10. Published 2026-06-09.

How severe is CVE-2026-44810?

High severity. CVSS v3 base score is 8.4 out of 10.

Auth bypass in Microsoft Windows_11_23h2

CVE-2026-44810

Improper authentication in Windows Cryptographic Services allows an unauthorized attacker to elevate privileges locally.

Vulnerability class: Broken Authentication

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Microsoft Windows_11_23h2
Microsoft Windows_11_24h2
Microsoft Windows_11_25h2
Microsoft Windows_11_26h1
Microsoft Windows_server_2022
Microsoft Windows_server_2025

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

secure@microsoft.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-44810?: CVE-2026-44810 is a high-severity vulnerability in Microsoft Windows_11_23h2, classified under Improper Authentication. CVSS score: 8.4/10. Published 2026-06-09.
How severe is CVE-2026-44810?: High severity. CVSS v3 base score is 8.4 out of 10.