CVE-2026-56194: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Heap-based buffer overflow in Windows Network File System allows an authorized attacker to elevate privileges over a network.
AI Analysis
Technical Summary
CVE-2026-56194 is a heap-based buffer overflow vulnerability in the Windows Network File System on Windows 10 Version 1607 (build 10.0.14393.0). It enables an attacker with authorized network access to elevate privileges, potentially leading to full system compromise. The vulnerability has been assigned a CVSS 3.1 base score of 8.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has released an official fix for this vulnerability as detailed in their security advisory.
Potential Impact
Successful exploitation allows an authorized attacker to elevate privileges remotely over the network, compromising system confidentiality, integrity, and availability. This could lead to unauthorized administrative control of the affected system.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56194 to remediate this vulnerability.
CVE-2026-56194: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
Heap-based buffer overflow in Windows Network File System allows an authorized attacker to elevate privileges over a network.
CVSS v3.1
Score 8.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-56194 is a heap-based buffer overflow vulnerability in the Windows Network File System on Windows 10 Version 1607 (build 10.0.14393.0). It enables an attacker with authorized network access to elevate privileges, potentially leading to full system compromise. The vulnerability has been assigned a CVSS 3.1 base score of 8.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has released an official fix for this vulnerability as detailed in their security advisory.
Potential Impact
Successful exploitation allows an authorized attacker to elevate privileges remotely over the network, compromising system confidentiality, integrity, and availability. This could lead to unauthorized administrative control of the affected system.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56194 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-19T13:54:04.006Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56194","vendor":"Microsoft"}]
Threat ID: 6a5676ba68715ace43f0aeae
Added to database: 07/14/2026, 17:49:46 UTC
Last enriched: 07/14/2026, 18:47:58 UTC
Last updated: 07/15/2026, 00:27:20 UTC
Views: 2
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