CVE-2026-62883: 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 (CVE-2026-62883) involves a numeric truncation error in the DNS functionality of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). The flaw allows an attacker who already has local authorized access with high privileges to elevate their privileges further on the affected system. The issue is classified under CWE-197 (Numeric Truncation Error). Microsoft has published an official fix to address this vulnerability.
Potential Impact
An authorized local attacker with high privileges can exploit this numeric truncation error in Windows DNS to elevate their privileges, potentially gaining higher system rights. The vulnerability affects confidentiality, integrity, and availability (all rated high impact in the CVSS vector). No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1607 (build 10.0.14393.0) as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62883. Applying this patch fully mitigates the vulnerability.
CVE-2026-62883: 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 (CVE-2026-62883) involves a numeric truncation error in the DNS functionality of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). The flaw allows an attacker who already has local authorized access with high privileges to elevate their privileges further on the affected system. The issue is classified under CWE-197 (Numeric Truncation Error). Microsoft has published an official fix to address this vulnerability.
Potential Impact
An authorized local attacker with high privileges can exploit this numeric truncation error in Windows DNS to elevate their privileges, potentially gaining higher system rights. The vulnerability affects confidentiality, integrity, and availability (all rated high impact in the CVSS vector). No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1607 (build 10.0.14393.0) as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62883. Applying this patch fully mitigates the vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-14T21:13:55.100Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62883","vendor":"Microsoft"}]
Threat ID: 6a7b581fbf8831d5391560ea
Added to database: 08/11/2026, 17:13:03 UTC
Last enriched: 08/11/2026, 21:12:42 UTC
Last updated: 08/12/2026, 02:01:18 UTC
Views: 4
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