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
This vulnerability (CVE-2026-56159) involves a heap-based buffer overflow in the Windows DHCP Server on Windows 10 Version 1607 (build 10.0.14393.0). An attacker can exploit this flaw remotely over the network to execute arbitrary code with system-level privileges. The CVSS 3.1 base score is 9.8, indicating critical severity with network attack vector, low attack complexity, no privileges required, and no user interaction needed. Microsoft has released an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation allows remote, unauthenticated attackers to execute arbitrary code on affected systems, potentially leading to full system compromise including confidentiality, integrity, and availability impacts. The vulnerability affects Windows 10 Version 1607 DHCP Server and can be triggered over the network without user interaction or privileges.
Mitigation Recommendations
Microsoft has released an official security update that fixes this vulnerability. Administrators should apply the provided patch from the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56159 as soon as possible to protect affected systems. No additional mitigations are specified or required once the patch is applied.
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
This vulnerability (CVE-2026-56159) involves a heap-based buffer overflow in the Windows DHCP Server on Windows 10 Version 1607 (build 10.0.14393.0). An attacker can exploit this flaw remotely over the network to execute arbitrary code with system-level privileges. The CVSS 3.1 base score is 9.8, indicating critical severity with network attack vector, low attack complexity, no privileges required, and no user interaction needed. Microsoft has released an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation allows remote, unauthenticated attackers to execute arbitrary code on affected systems, potentially leading to full system compromise including confidentiality, integrity, and availability impacts. The vulnerability affects Windows 10 Version 1607 DHCP Server and can be triggered over the network without user interaction or privileges.
Mitigation Recommendations
Microsoft has released an official security update that fixes this vulnerability. Administrators should apply the provided patch from the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56159 as soon as possible to protect affected systems. No additional mitigations are specified or required once the patch is applied.
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: 08/13/2026, 15:45:08 UTC
Last updated: 08/28/2026, 22:52:12 UTC
Views: 94
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