CVE-2025-53142
published 2025-08-12CVE-2025-53142: Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.
PriorityP337high7CVSS 3.1
AVLACHPRLUINSUCHIHAH
EPSS
0.33%
24.4th percentile
Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.
Affected
22 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_11_22h2 | < 10.0.22621.5768 | 10.0.22621.5768 |
| microsoft | windows_11_23h2 | < 10.0.22631.5768 | 10.0.22631.5768 |
| microsoft | windows_11_24h2 | < 10.0.26100.4851 | 10.0.26100.4851 |
| microsoft | windows_11_version_22h2 | >= 10.0.22621.0 < 10.0.22621.5768 | 10.0.22621.5768 |
| microsoft | windows_11_version_22h3 | >= 10.0.22631.0 < 10.0.22631.5768 | 10.0.22631.5768 |
| microsoft | windows_11_version_23h2 | >= 10.0.22631.0 < 10.0.22631.5768 | 10.0.22631.5768 |
| microsoft | windows_11_version_24h2 | >= 10.0.26100.0 < 10.0.26100.4946 | 10.0.26100.4946 |
| microsoft | windows_server_2022_23h2 | < 10.0.25398.1791 | 10.0.25398.1791 |
| microsoft | windows_server_2025 | < 10.0.26100.4851 | 10.0.26100.4851 |
| microsoft | windows_server_2025 | >= 10.0.26100.0 < 10.0.26100.4946 | 10.0.26100.4946 |
| msrc | azl3_kernel_6.6.57.1-7_on_azure_linux_3.0 | — | — |
| msrc | azl3_kernel_6.6.64.2-1_on_azure_linux_3.0 | — | — |
| msrc | cbl2_kernel_5.15.176.3-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_kernel_5.15.180.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | windows_11_version_22h2_for_arm64-based_systems | — | — |
| msrc | windows_11_version_22h2_for_x64-based_systems | — | — |
| msrc | windows_11_version_23h2_for_arm64-based_systems | — | — |
| msrc | windows_11_version_23h2_for_x64-based_systems | — | — |
| msrc | windows_11_version_24h2_for_arm64-based_systems | — | — |
| msrc | windows_11_version_24h2_for_x64-based_systems | — | — |
| msrc | windows_server_2022_23h2_edition | — | — |
| msrc | windows_server_2025 | — | — |
CVSS provenance
nvdv3.17.0HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
vendor_msrc7.0HIGH
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GHSA
GHSA-crvv-j87g-j7hr: Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally
ghsa_unreviewed·2025-08-12
CVE-2025-53142 [HIGH] CWE-416 GHSA-crvv-j87g-j7hr: Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally
Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.
Microsoft
Microsoft Brokering File System Elevation of Privilege Vulnerability
vendor_msrc·2025-08-12·CVSS 7.0
CVE-2025-53142 [HIGH] CWE-416 Microsoft Brokering File System Elevation of Privilege Vulnerability
Microsoft Brokering File System Elevation of Privilege Vulnerability
Description: Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.
FAQ: 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.
FAQ: What privileges could be gained by an attacker who successfully exploited this vulnerability?
An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.
Microsoft Brokering File System: Microsoft Brokering File System
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Elevation of Privilege
Exploit Status: Publicly Disclosed:No;Exploited:No;Lates
Microsoft
initramfs: avoid filename buffer overrun
vendor_msrc·2024-12-10·CVSS 6.7
CVE-2024-53142 [HIGH] initramfs: avoid filename buffer overrun
initramfs: avoid filename buffer overrun
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
Linux: Linux
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Reference: https://learn.microsoft.com/
No detection rules found.
No public exploits indexed.
Bleepingcomputer
Microsoft August 2025 Patch Tuesday fixes one zero-day, 107 flaws
blogs_bleepingcomputer·2025-08-12·CVSS 7.2
[HIGH] Microsoft August 2025 Patch Tuesday fixes one zero-day, 107 flaws
## Microsoft August 2025 Patch Tuesday fixes one zero-day, 107 flaws
## Lawrence Abrams
44 Elevation of Privilege Vulnerabilities
35 Remote Code Execution Vulnerabilities
18 Information Disclosure Vulnerabilities
4 Denial of Service Vulnerabilities
9 Spoofing Vulnerabilities
When BleepingComputer reports on the Patch Tuesday security updates, we only count those released on Patch Tuesday. Therefore, the number of flaws does not include Mariner, Azure, and Microsoft Edge bugs fixed earlier this month.
To learn more about the non-security updates released today, you can review our dedicated articles on the Windows 11 KB5063878 & KB5063875 cumulative updates and the Windows 10 KB5063709 cumulative update .
## One publicly disclosed zero-day fixed
This month's Patch Tuesday fixes one
Qualys
Microsoft and Adobe Patch Tuesday, August 2025 Security Update Review | Qualys
blogs_qualys·2025-08-12
Microsoft and Adobe Patch Tuesday, August 2025 Security Update Review | Qualys
#### Table of Contents
- Microsoft Patch Tuesday for August 2025
- Adobe Patches for August 2025
- Zero-day Vulnerability Patched in August Patch Tuesday Edition
- Critical Severity Vulnerabilities Patched in August Patch Tuesday Edition
- Other Microsoft Vulnerability Highlights
- Microsoft Release Summary
- Discover and Prioritize Vulnerabilities inVulnerability Management, Detection & Response (VMDR)
- Rapid Response withPatch Management (PM)
- Microsoft July 2025 Patch Tuesday Mitigations
- Qualys Monthly Webinar Series
It’s the second Tuesday of August, and Microsoft has rolled out its latest security updates. Microsoft’s August 2025 Patch Tuesday has arrived, bringing a fresh wave of security fixes to help organizations stay ahead of evolving threats. Here’s a quick breakdown of wh
Qualys
Microsoft and Adobe Patch Tuesday, August 2025 Security Update Review
blogs_qualys·2025-08-12
Microsoft and Adobe Patch Tuesday, August 2025 Security Update Review
## Table of Contents
Microsoft Patch Tuesday for August 2025
Adobe Patches for August 2025
Zero-day Vulnerability Patched in August Patch Tuesday Edition
Critical Severity Vulnerabilities Patched in August Patch Tuesday Edition
Other Microsoft Vulnerability Highlights
Microsoft Release Summary
Discover and Prioritize Vulnerabilities inVulnerability Management, Detection & Response (VMDR)
Rapid Response withPatch Management (PM)
Microsoft July 2025 Patch Tuesday Mitigations
Qualys Monthly Webinar Series
It’s the second Tuesday of August, and Microsoft has rolled out its latest security updates. Microsoft’s August 2025 Patch Tuesday has arrived, bringing a fresh wave of security fixes to help organizations stay ahead of evolving threats. Here’s a quick breakdown of what you need t
2025-08-12
Published