CVE-2026-42910: CWE-787: Out-of-bounds Write in Microsoft Windows 11 Version 24H2
CVE-2026-42910 is a high-severity vulnerability in Microsoft Windows 11 Version 24H2 involving an out-of-bounds write in the Windows Hotpatch Monitoring Service. This flaw allows an authorized local attacker to elevate privileges. An official fix is available from Microsoft to address this issue.
AI Analysis
Technical Summary
CVE-2026-42910 is an out-of-bounds write vulnerability (CWE-787) in the Windows Hotpatch Monitoring Service of Microsoft Windows 11 Version 24H2 (build 10.0.26100.0). The vulnerability enables a local attacker with some level of authorization to perform a write operation outside the intended memory bounds, potentially leading to privilege escalation. The CVSS v3.1 base score is 7.8, indicating high severity with impacts on confidentiality, integrity, and availability. Microsoft has released an official fix for this vulnerability as documented in their security update guide.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate their privileges on the affected system, potentially gaining higher-level access than intended. This can compromise system confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 11 Version 24H2 (build 10.0.26100.0) as soon as possible to remediate this vulnerability. Refer to the Microsoft security update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42910 for detailed patch information and installation instructions.
CVE-2026-42910: CWE-787: Out-of-bounds Write in Microsoft Windows 11 Version 24H2
Description
CVE-2026-42910 is a high-severity vulnerability in Microsoft Windows 11 Version 24H2 involving an out-of-bounds write in the Windows Hotpatch Monitoring Service. This flaw allows an authorized local attacker to elevate privileges. An official fix is available from Microsoft to address this issue.
CVSS v3.1
Score 7.8high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-42910 is an out-of-bounds write vulnerability (CWE-787) in the Windows Hotpatch Monitoring Service of Microsoft Windows 11 Version 24H2 (build 10.0.26100.0). The vulnerability enables a local attacker with some level of authorization to perform a write operation outside the intended memory bounds, potentially leading to privilege escalation. The CVSS v3.1 base score is 7.8, indicating high severity with impacts on confidentiality, integrity, and availability. Microsoft has released an official fix for this vulnerability as documented in their security update guide.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate their privileges on the affected system, potentially gaining higher-level access than intended. This can compromise system confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 11 Version 24H2 (build 10.0.26100.0) as soon as possible to remediate this vulnerability. Refer to the Microsoft security update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42910 for detailed patch information and installation instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-30T22:35:54.968Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42910","vendor":"Microsoft"}]
Threat ID: 6a284cc48dd33fbd8566480e
Added to database: 6/9/2026, 5:26:28 PM
Last enriched: 6/9/2026, 11:11:41 PM
Last updated: 6/10/2026, 5:00:29 AM
Views: 2
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