CVE-2026-24293: CWE-476: NULL Pointer Dereference in Microsoft Windows 10 Version 21H2
Null pointer dereference in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-24293) is caused by a null pointer dereference in the Windows Ancillary Function Driver for WinSock on Windows 10 Version 21H2 (build 10.0.19044.0). An authorized local attacker can exploit this flaw to elevate privileges, potentially gaining higher system rights. The CVSS v3.1 base score is 7.8, reflecting local attack vector with low complexity, requiring privileges but no user interaction, and resulting in high impact on confidentiality, integrity, and availability. The vendor has released a patch to remediate this vulnerability.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially leading to full system compromise. The vulnerability affects confidentiality, integrity, and availability of the system. There are no known exploits in the wild at this time.
Mitigation Recommendations
A patch is available from Microsoft to address this vulnerability. It is recommended to apply the official update promptly to mitigate the risk of privilege escalation. Since this is not a cloud service, remediation depends on patching the affected Windows 10 Version 21H2 systems.
CVE-2026-24293: CWE-476: NULL Pointer Dereference in Microsoft Windows 10 Version 21H2
Description
Null pointer dereference in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-24293) is caused by a null pointer dereference in the Windows Ancillary Function Driver for WinSock on Windows 10 Version 21H2 (build 10.0.19044.0). An authorized local attacker can exploit this flaw to elevate privileges, potentially gaining higher system rights. The CVSS v3.1 base score is 7.8, reflecting local attack vector with low complexity, requiring privileges but no user interaction, and resulting in high impact on confidentiality, integrity, and availability. The vendor has released a patch to remediate this vulnerability.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially leading to full system compromise. The vulnerability affects confidentiality, integrity, and availability of the system. There are no known exploits in the wild at this time.
Mitigation Recommendations
A patch is available from Microsoft to address this vulnerability. It is recommended to apply the official update promptly to mitigate the risk of privilege escalation. Since this is not a cloud service, remediation depends on patching the affected Windows 10 Version 21H2 systems.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-01-21T21:28:02.968Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69b0562aea502d3aa87d6987
Added to database: 3/10/2026, 5:34:34 PM
Last enriched: 4/18/2026, 2:11:37 PM
Last updated: 4/28/2026, 1:57:44 AM
Views: 64
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