CVE-2026-56159: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
AI Analysis
Technical Summary
CVE-2026-56159 is a heap-based buffer overflow vulnerability in the Windows DHCP Server on Windows 10 Version 1607 (build 10.0.14393.0). This vulnerability enables remote code execution by an unauthenticated attacker over the network. The vulnerability is classified under CWE-122. Microsoft has released an official fix to remediate this critical security issue.
Potential Impact
Successful exploitation of this vulnerability could allow an unauthenticated attacker to execute arbitrary code on the affected system remotely, potentially leading to full system compromise with high confidentiality, integrity, and availability impact.
Mitigation Recommendations
An official fix is available from Microsoft. It is strongly recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56159 to remediate this vulnerability.
CVE-2026-56159: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
CVSS v3.1
Score 9.8critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-56159 is a heap-based buffer overflow vulnerability in the Windows DHCP Server on Windows 10 Version 1607 (build 10.0.14393.0). This vulnerability enables remote code execution by an unauthenticated attacker over the network. The vulnerability is classified under CWE-122. Microsoft has released an official fix to remediate this critical security issue.
Potential Impact
Successful exploitation of this vulnerability could allow an unauthenticated attacker to execute arbitrary code on the affected system remotely, potentially leading to full system compromise with high confidentiality, integrity, and availability impact.
Mitigation Recommendations
An official fix is available from Microsoft. It is strongly recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56159 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-19T13:53:31.988Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56159","vendor":"Microsoft"}]
Threat ID: 6a5676b968715ace43f0ae2a
Added to database: 07/14/2026, 17:49:45 UTC
Last enriched: 07/14/2026, 19:02:27 UTC
Last updated: 07/15/2026, 01:54:05 UTC
Views: 12
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