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CVE-2026-85355

Windows Common Log File System Driver Elevation of Privilege Vulnerability

HIGH
7
CVSS Score
Published: October 13, 2026 at 07:00 PM UTC
Updated: October 28, 2026 at 06:13 PM UTC
15 products affected across 1 vendorWindows Server 2016Windows Server 2019Windows Server 2012

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Severity
HIGH7
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

Inclusion of functionality from untrusted control sphere in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor AdvisoryPatch
Source: cverecord
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85355

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7HIGHmicrosoft
Vector?

Quick Info

StatusANALYZED
CWE
CWE-829

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