Microsoft Windows up to Server 2022 23H2 Ancillary Function Driver for WinSock use after free

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7.5	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Microsoft Windows. It has been declared as critical. The impacted element is an unknown function of the component Ancillary Function Driver for WinSock. Such manipulation leads to use after free. This vulnerability is referenced as CVE-2024-38193. The attack can only be performed from a local environment. Furthermore, an exploit is available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows. It has been rated as critical. Affected by this issue is some unknown processing of the component Ancillary Function Driver for WinSock. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

The weakness was published 08/13/2024 as confirmed security update guide (Website). The advisory is available at msrc.microsoft.com. This vulnerability is handled as CVE-2024-38193. The exploitation is known to be easy. Local access is required to approach this attack. Technical details are unknown but a public exploit is available.

The exploit is available at exploit-db.com. It is declared as attacked. This issue was added on 08/13/2024 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 09/03/2024:

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (52284) and Zero-Day.cz (900). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Operating System

Vendor

Microsoft

Name

Windows

Version

License

commercial

Website

Vendor: https://www.microsoft.com/
Product: https://www.microsoft.com/en-us/windows

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 7.8
Vendor Vector (Microsoft): 🔍

CNA Base Score: 7.8
CNA Vector (Microsoft): 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Attacked
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Exploit-DB: 🔍
Zero-Day.cz: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

08/13/2024 🔍
08/13/2024 +0 days 🔍
08/13/2024 +0 days 🔍
08/08/2025 +360 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: msrc.microsoft.com
Status: Confirmed

CVE: CVE-2024-38193 (🔍)
GCVE (CVE): GCVE-0-2024-38193
GCVE (VulDB): GCVE-100-274490
scip Labs: https://www.scip.ch/en/?labs.20161215

Entryinfo

Created: 08/13/2024 20:15
Updated: 08/08/2025 17:59
Changes: 08/13/2024 20:15 (12), 08/13/2024 20:16 (22), 08/13/2024 20:20 (35), 08/14/2024 01:10 (16), 08/14/2024 07:52 (10), 08/15/2024 08:58 (1), 08/16/2024 08:28 (2), 09/09/2024 22:30 (1), 05/10/2025 05:16 (1), 08/08/2025 17:59 (3)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.