What is CVE-2026-96849?

CVE-2026-96849 is a medium-severity vulnerability in Microsoft Windows 11 Version 26h1, classified under Use of Uninitialized Resource. CVSS score: 5.5/10. Published 2026-10-13.

How severe is CVE-2026-96849?

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

Vulnerability in Microsoft Windows 11 Version 26h1

CVE-2026-96849

Use of uninitialized resource in Windows Kernel-Mode Drivers allows an authorized attacker to disclose information locally.

Published 2026-10-13 · last modified 2026-10-13.

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:H/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Microsoft Windows 11 Version 26h1

Weakness classification (CWE)

CWE-908 — Use of Uninitialized Resource

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96849 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-96849?: CVE-2026-96849 is a medium-severity vulnerability in Microsoft Windows 11 Version 26h1, classified under Use of Uninitialized Resource. CVSS score: 5.5/10. Published 2026-10-13.
How severe is CVE-2026-96849?: Medium severity. CVSS v3 base score is 5.5 out of 10.