CVE-2026-85921

8.2 HIGH

Published14 Sept 2026

Description

Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.

CVSS 3.1 breakdown

Attack vectorLocal

Attack complexityLow

Privileges requiredHigh

User interactionNone

ScopeChanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85921

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2026-85921 being actively exploited?

CVE-2026-85921 is not in the CISA KEV catalog.

How severe is CVE-2026-85921?

CVE-2026-85921 has a CVSS 3.1 base score of 8.2, rated high.

How do I fix CVE-2026-85921?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-85921 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.