CVE-2023-41772
published 2023-10-10CVE-2023-41772: Win32k Elevation of Privilege Vulnerability Win32k Elevation of Privilege Vulnerability
high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
11.85%
95.6th percentile
Win32k Elevation of Privilege Vulnerability
Win32k Elevation of Privilege Vulnerability
Affected
23 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_version_1809 | >= 10.0.0 < 10.0.17763.4974 | 10.0.17763.4974 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.4974 | 10.0.17763.4974 |
| microsoft | windows_10_version_21h2 | >= 10.0.19043.0 < 10.0.19041.3570 | 10.0.19041.3570 |
| microsoft | windows_10_version_22h2 | >= 10.0.19045.0 < 10.0.19045.3570 | 10.0.19045.3570 |
| microsoft | windows_11_version_21h2 | >= 10.0.0 < 10.0.22000.2538 | 10.0.22000.2538 |
| microsoft | windows_11_version_22h2 | >= 10.0.22621.0 < 10.0.22621.2428 | 10.0.22621.2428 |
| microsoft | windows_server_2019 | >= 10.0.17763.0 < 10.0.17763.4974 | 10.0.17763.4974 |
| microsoft | windows_server_2022 | >= 10.0.20348.0 < 10.0.20348.2031 | 10.0.20348.2031 |
| msrc | windows_10_version_1809_for_32-bit_systems | — | — |
| msrc | windows_10_version_1809_for_arm64-based_systems | — | — |
| msrc | windows_10_version_1809_for_x64-based_systems | — | — |
| msrc | windows_10_version_21h2_for_32-bit_systems | — | — |
| msrc | windows_10_version_21h2_for_arm64-based_systems | — | — |
| msrc | windows_10_version_21h2_for_x64-based_systems | — | — |
| msrc | windows_10_version_22h2_for_32-bit_systems | — | — |
| msrc | windows_10_version_22h2_for_arm64-based_systems | — | — |
| msrc | windows_10_version_22h2_for_x64-based_systems | — | — |
| msrc | windows_11_version_21h2_for_arm64-based_systems | — | — |
| msrc | windows_11_version_21h2_for_x64-based_systems | — | — |
| msrc | windows_11_version_22h2_for_arm64-based_systems | — | — |
| msrc | windows_11_version_22h2_for_x64-based_systems | — | — |
| msrc | windows_server_2019 | — | — |
| msrc | windows_server_2022 | — | — |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
cvelistv57.8HIGH
vendor_msrc7.8HIGH
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CVEList
Win32k Elevation of Privilege Vulnerability
cvelistv5·2023-10-10·CVSS 7.8
CVE-2023-41772 [HIGH] CWE-284 Win32k Elevation of Privilege Vulnerability
Win32k Elevation of Privilege Vulnerability
Win32k Elevation of Privilege Vulnerability
Microsoft
Win32k Elevation of Privilege Vulnerability
vendor_msrc·2023-10-10·CVSS 7.8
CVE-2023-41772 [HIGH] CWE-284 Win32k Elevation of Privilege Vulnerability
Win32k Elevation of Privilege Vulnerability
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.
Windows Win32K: Windows Win32K
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Elevation of Privilege
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation More Likely;DOS:N/A
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5031361
Reference: https://support.microsoft.com/help/5031361
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5031364
Reference: https://support.microsoft.com/help/5031364
Reference: http://support.microsoft.com/help/5031364
Reference: http
No detection rules found.
No public exploits indexed.
Projectzero
A Deep Dive into the GetProcessHandleFromHwnd API
blogs_projectzero·2026-02-26
A Deep Dive into the GetProcessHandleFromHwnd API
GetProcessHandleFromHwnd
I typically start by reading the documentation for an API I donât know about, assuming itâs documented at all. It can give you an idea of how long the API has existed as well as its security properties. The documentationâs remarks contain the following three statements that I thought were interesting:
If the caller has UIAccess, however, they can use a windows hook to inject code into the target process, and from within the target process, send a handle back to the caller.
GetProcessHandleFromHwnd is a convenience function that uses this technique to obtain the handle of the process that owns the specified HWND.
Note that it only succeeds in cases where the caller and target process are running as the same user.
GetProcessHandleFromHwnd
Of course some o
Qualys
Qualys Review: Microsoft and Adobe Security Patches October 2023 | Qualys
blogs_qualys·2023-10-10
Qualys Review: Microsoft and Adobe Security Patches October 2023 | Qualys
#### Table of Contents
- Microsoft Patch Tuesday for October 2023
- Adobe Patches for October 2023
- Zero-day Vulnerability Patched in October Patch Tuesday Edition
- Other Critical Severity Vulnerabilities Patched in October Patch Tuesday Edition
- Other Microsoft Vulnerability Highlights
- Microsoft Release Summary
- Discover and Prioritize Vulnerabilities in Vulnerability Management, Detection & Response (VMDR)
- Rapid Response with Patch Management (PM)
- EVALUATE Vendor-Suggested Mitigation with Policy Compliance (PC)
- EXECUTE Mitigation Using Qualys Custom Assessment and Remediation (CAR)
- Qualys Monthly Webinar Series
Microsoft released its October edition of Patch Tuesday! In this month’s updates, Microsoft has addressed 105 vulnerabilities in different products, features, and
Trendmicro
The October 2023 Security Update Review
blogs_trendmicro·2023-10-10
The October 2023 Security Update Review
# The October 2023 Security Update Review
Get the October 2023 security update and review.
By: Dustin Childs
2023/10/10
Read time: ( words)
Save to Folio
Twenty years ago this month, Microsoft introduced the concept of “Patch Tuesday” – although the marketing folks wanted it called “Update Tuesday” (they didn’t like the word “patch”). Over the years, more companies joined the Patch Tuesday bandwagon. Here we are 20 years later, still talking about the latest security releases from Adobe and Microsoft. Pop some champagne to celebrate and join us as we review the details of the latest advisories from Adobe and Microsoft. If you’d rather watch the video recap, you can check it out here.
Adobe Patches for October 2023
For October, Adobe released three bulletins addressing 13 CVEs in Ado
Bleepingcomputer
Microsoft October 2023 Patch Tuesday fixes 3 zero-days, 104 flaws
blogs_bleepingcomputer·2023-10-10·CVSS 5.3
CVE-2023-5346 [MEDIUM] Microsoft October 2023 Patch Tuesday fixes 3 zero-days, 104 flaws
## Microsoft October 2023 Patch Tuesday fixes 3 zero-days, 104 flaws
## Lawrence Abrams
26 Elevation of Privilege Vulnerabilities
3 Security Feature Bypass Vulnerabilities
45 Remote Code Execution Vulnerabilities
12 Information Disclosure Vulnerabilities
17 Denial of Service Vulnerabilities
1 Spoofing Vulnerabilities
The total count of 104 flaws does not include one Chromium vulnerability tracked as CVE-2023-5346, which was fixed by Google on October 3rd and ported to Microsoft Edge.
To learn more about the non-security updates released today, you can review our dedicated articles on the new Windows 11 KB5031354 cumulative update and Windows 10 KB5031356 cumulative update .
## Three actively exploited zero-day vulnerabilities
This month's Patch Tuesday fixes three zero-day vulne
Trendmicro
The October 2023 Security Update Review
blogs_trendmicro·2023-10-10·CVSS 6.5
[MEDIUM] The October 2023 Security Update Review
## The October 2023 Security Update Review
Get the October 2023 security update and review.
By: Dustin Childs Oct 10, 2023 Read time: ( words)
Save to Folio
Twenty years ago this month, Microsoft introduced the concept of “Patch Tuesday” – although the marketing folks wanted it called “Update Tuesday” (they didn’t like the word “patch”). Over the years, more companies joined the Patch Tuesday bandwagon. Here we are 20 years later, still talking about the latest security releases from Adobe and Microsoft. Pop some champagne to celebrate and join us as we review the details of the latest advisories from Adobe and Microsoft. If you’d rather watch the video recap, you can check it out here.
CVE
Title
Severity
CVSS
Public
Exploited
Type
CVE-2023-36563
Microsoft WordPad Information
Qualys
Microsoft and Adobe Patch Tuesday, October 2023 Security Update Review
blogs_qualys·2023-10-10
Microsoft and Adobe Patch Tuesday, October 2023 Security Update Review
## Table of Contents
Microsoft Patch Tuesday for October 2023
Adobe Patches for October 2023
Zero-day Vulnerability Patched in October Patch Tuesday Edition
Other Critical Severity Vulnerabilities Patched in October Patch Tuesday Edition
Other Microsoft Vulnerability Highlights
Microsoft Release Summary
Discover and Prioritize Vulnerabilities in Vulnerability Management, Detection & Response (VMDR)
Rapid Response with Patch Management (PM)
EVALUATE Vendor-Suggested Mitigation with Policy Compliance (PC)
EXECUTE Mitigation Using Qualys Custom Assessment and Remediation (CAR)
Qualys Monthly Webinar Series
Microsoft released its October edition of Patch Tuesday! In this month’s updates, Microsoft has addressed 105 vulnerabilities in different products, features, and roles. Let’s t
Trendmicro
The October 2023 Security Update Review
blogs_trendmicro·2023-10-10·CVSS 6.5
[MEDIUM] The October 2023 Security Update Review
## The October 2023 Security Update Review
Get the October 2023 security update and review.
By: Dustin Childs 2023/10/10 Read time: ( words)
Save to Folio
Twenty years ago this month, Microsoft introduced the concept of “Patch Tuesday” – although the marketing folks wanted it called “Update Tuesday” (they didn’t like the word “patch”). Over the years, more companies joined the Patch Tuesday bandwagon. Here we are 20 years later, still talking about the latest security releases from Adobe and Microsoft. Pop some champagne to celebrate and join us as we review the details of the latest advisories from Adobe and Microsoft. If you’d rather watch the video recap, you can check it out here.
CVE
Title
Severity
CVSS
Public
Exploited
Type
CVE-2023-36563
Microsoft WordPad Information Di
Zscaler
Zscaler found Windows Security Vulnerabilities | 10-10-2023
blogs_zscaler·CVSS 7.0
[HIGH] Zscaler found Windows Security Vulnerabilities | 10-10-2023
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Industry Report
Zscaler: A Leader in the 2025 Gartner® Magic Quadrant™ for Security Service Edge (SSE)
USE CASES
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CXO REVOLUTIONARIES
Amplifying the voices of real-world digital and zero trust pioneers
Discover how it began and where it’s going
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Projectzero
A Deep Dive into the GetProcessHandleFromHwnd API
blogs_projectzero
A Deep Dive into the GetProcessHandleFromHwnd API
In my previous blog post I mentioned the GetProcessHandleFromHwnd API. This was an API I didnât know existed until I found a publicly disclosed UAC bypass using the Quick Assist UI Access application. This API looked interesting so I thought I should take a closer look.
I typically start by reading the documentation for an API I donât know about, assuming itâs documented at all. It can give you an idea of how long the API has existed as well as its security properties. The documentationâs remarks contain the following three statements that I thought were interesting:
If the caller has UIAccess, however, they can use a windows hook to inject code into the target process, and from within the target process, send a handle back to the caller.
GetProcessHandleFromHwnd is a convenienc
2023-10-10
Published