CVE tracker / CVE-2026-32071

CVE-2026-32071

CVE-2026-32071 is the Windows Local Security Authority Subsystem Service (LSASS) Denial of Service Vulnerability. Microsoft rates it Important, CVSS 7.5. It is not in CISA's Known Exploited Vulnerabilities catalog. Published April 14, 2026.

Risk summary

HighDenial of Service
7.5
CVSS v3 base
1.1%
EPSS: chance of exploitation in 30 days
High
Severity
Important
Microsoft's rating
Less Likely
Microsoft: exploitation
No
In CISA KEV

Microsoft describes it: “Null pointer dereference in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to deny service over a network.”

How to fix it

Microsoft lists 27 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.