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CVE-2026-78451

Microsoft Windows SCSI Class System File Elevation of Privilege Vulnerability

Published: Sep 8, 2026Updated: Sep 11, 2026 Sources: CVE List NVDCWE-822
6.8MEDIUM
NVD MITRE
EPSS Score
0.4%
Top 62.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

Untrusted pointer dereference in Microsoft Windows SCSI Class System File allows an unauthorized attacker to elevate privileges with a physical attack.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:PAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:PAttack Vector
Physical
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-822

Affected Products

Microsoft
commercial·US
Windows 10 Version 1809On-premOS
Operating Systems / windows
Windows 11 version 23H2On-premOS
Operating Systems / windows
Windows Server 2019 (Server Core installation)On-premOS
Operating Systems / windows
Windows Server 2022On-premOS
Operating Systems / windows
Windows Server 2025 (Server Core installation)On-premOS
Operating Systems / windows
and 18 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2026-78451?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78451
msrc.microsoft.com
News mentions
1

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