CVE-2026-42987: CWE-416: Use After Free in Microsoft Windows Server 2012
Use after free in Windows Deployment Services allows an unauthorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability involves a use-after-free condition in Windows Deployment Services on Windows Server 2012, which could allow an unauthenticated attacker to execute arbitrary code remotely. The CVSS 3.1 vector indicates network attack vector with high complexity, no privileges required, no user interaction, and impacts confidentiality, integrity, and availability. Microsoft has published an official fix for this issue.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code remotely on affected Windows Server 2012 systems, potentially leading to full system compromise including confidentiality, integrity, and availability impacts.
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
Use after free in Windows Deployment Services allows an unauthorized attacker to execute code over a network.
CVSS v3.1
Score 8.1high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a use-after-free condition in Windows Deployment Services on Windows Server 2012, which could allow an unauthenticated attacker to execute arbitrary code remotely. The CVSS 3.1 vector indicates network attack vector with high complexity, no privileges required, no user interaction, and impacts confidentiality, integrity, and availability. Microsoft has published an official fix for this issue.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code remotely on affected Windows Server 2012 systems, potentially leading to full system compromise including confidentiality, integrity, and availability impacts.
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: 06/09/2026, 17:26:35 UTC
Last enriched: 07/29/2026, 21:50:33 UTC
Last updated: 07/31/2026, 21:26:44 UTC
Views: 126
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