CVE-2026-65798: CWE-197: Numeric Truncation Error in Microsoft Windows 10 Version 1607
Numeric truncation error in Windows DNS allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability, identified as CVE-2026-65798 and classified under CWE-197 (Numeric Truncation Error), affects Microsoft Windows 10 Version 1607 (build 10.0.14393.0). It involves a numeric truncation error in the Windows DNS service that can be exploited by an authorized local attacker to elevate privileges. The CVSS 3.1 base score is 6.7 with vector AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H, indicating local attack vector, low attack complexity, high privileges required, no user interaction, unchanged scope, and high impact on confidentiality, integrity, and availability. Microsoft has released an official fix for this vulnerability as documented in their security update guide.
Potential Impact
An authorized local attacker can exploit this numeric truncation error in the Windows DNS component to elevate their privileges, potentially gaining higher-level access to the affected system. This can lead to full compromise of confidentiality, integrity, and availability of the system.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. It is recommended to apply the security update provided by Microsoft for Windows 10 Version 1607 (build 10.0.14393.0) as soon as possible to remediate this issue.
CVE-2026-65798: CWE-197: Numeric Truncation Error in Microsoft Windows 10 Version 1607
Description
Numeric truncation error in Windows DNS allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 6.7medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CVE-2026-65798 and classified under CWE-197 (Numeric Truncation Error), affects Microsoft Windows 10 Version 1607 (build 10.0.14393.0). It involves a numeric truncation error in the Windows DNS service that can be exploited by an authorized local attacker to elevate privileges. The CVSS 3.1 base score is 6.7 with vector AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H, indicating local attack vector, low attack complexity, high privileges required, no user interaction, unchanged scope, and high impact on confidentiality, integrity, and availability. Microsoft has released an official fix for this vulnerability as documented in their security update guide.
Potential Impact
An authorized local attacker can exploit this numeric truncation error in the Windows DNS component to elevate their privileges, potentially gaining higher-level access to the affected system. This can lead to full compromise of confidentiality, integrity, and availability of the system.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. It is recommended to apply the security update provided by Microsoft for Windows 10 Version 1607 (build 10.0.14393.0) as soon as possible to remediate this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-22T21:36:47.629Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65798","vendor":"Microsoft"}]
Threat ID: 6a7b5833bf8831d5391564c4
Added to database: 08/11/2026, 17:13:23 UTC
Last enriched: 08/11/2026, 19:44:14 UTC
Last updated: 08/12/2026, 00:12:10 UTC
Views: 4
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