CVE tracker / CVE-2026-32216

CVE-2026-32216

CVE-2026-32216 is the Windows Redirected Drive Buffering System Denial of Service Vulnerability. Microsoft rates it Important, CVSS 5.5. It is not in CISA's Known Exploited Vulnerabilities catalog. Published April 14, 2026.

Risk summary

MediumDenial of Service
5.5
CVSS v3 base
0.4%
EPSS: chance of exploitation in 30 days
Medium
Severity
Moderate
Microsoft's rating
Less Likely
Microsoft: exploitation
No
In CISA KEV

Microsoft describes it: “Null pointer dereference in Windows Redirected Drive Buffering allows an authorized attacker to deny service locally.”

How to fix it

Microsoft lists 2 affected products and the update that fixes each:

What Microsoft changed

Details

Weakness
CWE-476: NULL Pointer Dereference
Publicly disclosed (Microsoft)
No
Exploited (Microsoft)
No
Known exploited (CISA KEV)
Not listed
Published
April 14, 2026
Last revised
April 14, 2026

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References

Microsoft Security Update Guide NVD CVE record CWE

From Microsoft, CISA, NVD and FIRST data; the Microsoft details were read when this page was opened. Check the references above before you act.