Description
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
Published: 2026-07-14
Score: 7.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

A use‑after‑free flaw exists in the Windows Cloud Files Mini Filter driver that allows a user who already has local, authorized access to manipulate memory after the driver deallocates it. This condition can be exploited to execute code with elevated privileges, resulting in the compromise of the entire operating system. The core weakness is categorized as CWE‑416: Use After Free.

Affected Systems

Microsoft Windows 10 versions 1809, 21H2, 22H2; Windows 11 versions 24H2, 25H2, 26H1; Windows Server 2019 (incl. Server Core), 2022, and 2025 (incl. Server Core).

Risk and Exploitability

The CVSS score of 7.8 indicates a moderate severity vulnerability. An EPSS score of less than 1 % suggests that exploitation opportunities are currently rare, and the vulnerability is not listed in the CISA KEV catalog. Attackers require local, authorized access, implying a local attack vector, but once reached they can gain system‑level privileges.

Generated by OpenCVE AI on July 31, 2026 at 06:05 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the latest Windows cumulative update that resolves CVE‑2026‑58613 from the Microsoft Update Catalog and deploy it to all affected systems using WSUS, SCCM, or a similar tool.
  • If the update cannot be applied immediately, disable the Cloud Files Mini Filter driver via Group Policy or registry settings until the patch is available.
  • Limit local user accounts and enforce least privilege to reduce the chance that an authorized attacker can trigger the use‑after‑free.

Generated by OpenCVE AI on July 31, 2026 at 06:05 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Wed, 15 Jul 2026 12:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Tue, 14 Jul 2026 17:45:00 +0000

Type Values Removed Values Added
Description Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
Title Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft windows 10 1809
Microsoft windows 10 21h2
Microsoft windows 10 22h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
Microsoft windows Server 2019
Microsoft windows Server 2022
Microsoft windows Server 2025
Weaknesses CWE-416
CPEs cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft windows 10 1809
Microsoft windows 10 21h2
Microsoft windows 10 22h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
Microsoft windows Server 2019
Microsoft windows Server 2022
Microsoft windows Server 2025
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}

Subscriptions

Microsoft Windows 10 1809 Windows 10 21h2 Windows 10 22h2 Windows 11 24h2 Windows 11 25h2 Windows 11 26h1 Windows Server 2019 Windows Server 2022 Windows Server 2025
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-08-03T22:58:57.825Z

Reserved: 2026-07-01T18:03:43.125Z

Link: CVE-2026-58613

cve-icon Vulnrichment

Updated: 2026-07-15T14:33:58.130Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-31T06:15:04Z

Weaknesses