CVE-2026-42987: CWE-416: Use After Free in Microsoft Windows Server 2012
CVE-2026-42987 is a use-after-free vulnerability in Windows Deployment Services on Microsoft Windows Server 2012. This flaw allows an unauthorized attacker to execute code remotely over a network. The vulnerability has a high severity rating with a CVSS score of 8. 1. An official fix is available from Microsoft to address this issue.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-42987) involves a use-after-free condition in Windows Deployment Services on Windows Server 2012 (version 6.2.9200.0). Exploitation could allow an unauthenticated attacker to execute arbitrary code remotely. The vulnerability is classified as CWE-416. Microsoft has published an official fix to remediate this issue, as detailed in their security update guide.
Potential Impact
Successful exploitation of this vulnerability could lead to remote code execution with high impact on confidentiality, integrity, and availability of the affected system. The attacker does not require privileges or user interaction to exploit this vulnerability, but the attack complexity is high.
Mitigation Recommendations
An official fix is available from Microsoft. Administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42987 to remediate this vulnerability.
CVE-2026-42987: CWE-416: Use After Free in Microsoft Windows Server 2012
Description
CVE-2026-42987 is a use-after-free vulnerability in Windows Deployment Services on Microsoft Windows Server 2012. This flaw allows an unauthorized attacker to execute code remotely over a network. The vulnerability has a high severity rating with a CVSS score of 8. 1. An official fix is available from Microsoft to address this issue.
CVSS v3.1
Score 8.1high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-42987) involves a use-after-free condition in Windows Deployment Services on Windows Server 2012 (version 6.2.9200.0). Exploitation could allow an unauthenticated attacker to execute arbitrary code remotely. The vulnerability is classified as CWE-416. Microsoft has published an official fix to remediate this issue, as detailed in their security update guide.
Potential Impact
Successful exploitation of this vulnerability could lead to remote code execution with high impact on confidentiality, integrity, and availability of the affected system. The attacker does not require privileges or user interaction to exploit this vulnerability, but the attack complexity is high.
Mitigation Recommendations
An official fix is available from Microsoft. Administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42987 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-30T23:43:50.746Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42987","vendor":"Microsoft"}]
Threat ID: 6a284ccb8dd33fbd8566495a
Added to database: 6/9/2026, 5:26:35 PM
Last enriched: 6/9/2026, 10:56:02 PM
Last updated: 6/10/2026, 4:56:58 AM
Views: 2
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