CVE-2026-49174: CWE-306: Missing Authentication for Critical Function in Microsoft Windows 10 Version 1809
Missing authentication for critical function in Microsoft Windows DNS allows an authorized attacker to perform tampering locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-49174) involves missing authentication for a critical function in the Windows DNS service on Microsoft Windows 10 Version 1809 (build 10.0.17763.0). An attacker with local authorized access can exploit this flaw to tamper with the system. The CVSS v3.1 base score is 6.1, reflecting a medium severity with low attack complexity and requiring low privileges but no user interaction. Microsoft has published an official fix for this vulnerability.
Potential Impact
An authorized local attacker can exploit this vulnerability to tamper with the Windows DNS component, potentially impacting system integrity. Confidentiality impact is low, integrity impact is high, and availability is not affected. There are no known exploits in the wild at this time.
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-2026-49174 to remediate this vulnerability.
CVE-2026-49174: CWE-306: Missing Authentication for Critical Function in Microsoft Windows 10 Version 1809
Description
Missing authentication for critical function in Microsoft Windows DNS allows an authorized attacker to perform tampering locally.
CVSS v3.1
Score 6.1medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-49174) involves missing authentication for a critical function in the Windows DNS service on Microsoft Windows 10 Version 1809 (build 10.0.17763.0). An attacker with local authorized access can exploit this flaw to tamper with the system. The CVSS v3.1 base score is 6.1, reflecting a medium severity with low attack complexity and requiring low privileges but no user interaction. Microsoft has published an official fix for this vulnerability.
Potential Impact
An authorized local attacker can exploit this vulnerability to tamper with the Windows DNS component, potentially impacting system integrity. Confidentiality impact is low, integrity impact is high, and availability is not affected. There are no known exploits in the wild at this time.
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-2026-49174 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-27T23:44:09.623Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49174","vendor":"Microsoft"}]
Threat ID: 6a566f6b68715ace43e6b3d8
Added to database: 07/14/2026, 17:18:35 UTC
Last enriched: 08/13/2026, 14:21:33 UTC
Last updated: 08/28/2026, 22:52:11 UTC
Views: 54
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