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CVE-2026-119389: Windows Storage Elevation of Privilege Vulnerability

CVE-2026-119389 is an elevation of privilege vulnerability in Windows Storage, rated Important by Microsoft, with a CVSS 3.1 base score of 7 (High). An attacker can exploit it by an attacker with local access, with low privileges and without user interaction. Microsoft has not reported exploitation in the wild and rates exploitation as more likely. Microsoft released the fix on 10 November 2026 in the November 2026 Patch Tuesday, delivered through 7 security updates (KB5131090, KB5131087, KB5132061, KB5132043 and more). It affects 14 products in 1 product family (Windows).

Key facts

CVE ID
CVE-2026-119389
Severity
High CVSS 7
Microsoft severity
Important
Impact
Elevation of Privilege
Exploited in the wild
No
Publicly disclosed
No
Exploitation likelihood
More Likely
Weakness
CWE-416
CISA KEV
Not listed
Released
Last updated
Patch Tuesday
November 2026 Patch Tuesday
Product families
Windows

CVSS score and vector

Microsoft scores CVE-2026-119389 at 7 (temporal 6.1) using CVSS 3.1. Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

MetricValue
Attack vectorLocal
Attack complexityHigh
Privileges requiredLow
User interactionNone
ScopeUnchanged
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit code maturityUnproven
Remediation levelOfficial fix
Report confidenceConfirmed

Description

Use after free in Windows Storage allows an authorized attacker to elevate privileges locally.

Frequently asked questions (Microsoft)

What privileges could be gained by an attacker who successfully exploited this vulnerability?

An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.

According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?

Successful exploitation of this vulnerability requires an attacker to win a race condition.

Affected products (14)

Windows

ProductSecurity updateTypeFixed buildRestart
Windows Server 2022KB5131090Security Update10.0.20348.5870Yes
Windows Server 2022 (Server Core installation)KB5131090Security Update10.0.20348.5870Yes
Windows 11 Version 23H2 for ARM64-based SystemsKB5131087Security Update10.0.22631.7711Yes
Windows 11 Version 23H2 for x64-based SystemsKB5131087Security Update10.0.22631.7711Yes
Windows 11 Version 24H2 for ARM64-based SystemsKB5132061
KB5132043		Security Update
Security Update		10.0.26100.9974
10.0.26100.9911		Yes
No
Windows 11 Version 24H2 for x64-based SystemsKB5132061
KB5132043		Security Update
Security Update		10.0.26100.9974
10.0.26100.9911		Yes
No
Windows 11 Version 25H2 for ARM64-based SystemsKB5132043Security Update10.0.26200.9911No
Windows 11 Version 25H2 for x64-based SystemsKB5132043Security Update10.0.26200.9911No
Windows 11 Version 26H2 for ARM64-based SystemsKB5132043Security Update10.0.26300.9911No
Windows 11 Version 26H2 for x64-based SystemsKB5132043Security Update10.0.26300.9911No
Windows Server 2025KB5131080
KB5131077		Security Update
Security Hotpatch Update		10.0.26100.33822
10.0.26100.33730		Yes
No
Windows Server 2025 (Server Core installation)KB5131080
KB5131077		Security Update
Security Hotpatch Update		10.0.26100.33822
10.0.26100.33730		Yes
No
Windows 11 Version 26H1 for ARM64-based SystemsKB5132059Security Update10.0.28000.3501Yes
Windows 11 version 26H1 for x64-based SystemsKB5132059Security Update10.0.28000.3501Yes

Security updates (7)

NIST NVD data

NVD status
Awaiting Analysis
NVD CVSS
7 (HIGH)
NVD weakness
CWE-416
Published to NVD
NVD last modified

References

Acknowledgments

  • Killer Queen

Revision history

VersionDateDescription
1.0Information published.

Sources