What is CVE-2026-32216?

CVE-2026-32216 is a medium-severity vulnerability in Microsoft Windows 11 26h1, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2026-04-14.

How severe is CVE-2026-32216?

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

NULL pointer dereference in Microsoft Windows 11 26h1

CVE-2026-32216

Null pointer dereference in Windows Redirected Drive Buffering allows an authorized attacker to deny service locally.

Published 2026-04-14 · last modified 2026-06-17.

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:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (31.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 31.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000

Affected products

Microsoft Windows 11 26h1
Microsoft Windows 11 Version 26h1 — versions 10.0.28000.0

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

Windows Redirected Drive Buffering System Denial of Service Vulnerability (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-32216?: CVE-2026-32216 is a medium-severity vulnerability in Microsoft Windows 11 26h1, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2026-04-14.
How severe is CVE-2026-32216?: Medium severity. CVSS v3 base score is 5.5 out of 10.