CVE-2026-49171: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
CVE-2026-49171 is a use-after-free vulnerability in Microsoft Windows Speech on Windows 10 Version 1607. This flaw allows an authorized local attacker to elevate privileges. The vulnerability has a high severity with a CVSS score of 7.5. An official fix is available from Microsoft to address this issue.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-49171) involves a use-after-free condition in the Microsoft Windows Speech component on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local access with limited privileges and user interaction, but successful exploitation can lead to a complete system compromise with high impact on confidentiality, integrity, and availability. Microsoft has released an official patch to remediate this issue.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate privileges, potentially gaining full control over the affected system. The vulnerability impacts confidentiality, integrity, and availability at a high level, enabling significant compromise of the 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-2026-49171 to remediate this vulnerability.
CVE-2026-49171: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Description
CVE-2026-49171 is a use-after-free vulnerability in Microsoft Windows Speech on Windows 10 Version 1607. This flaw allows an authorized local attacker to elevate privileges. The vulnerability has a high severity with a CVSS score of 7.5. An official fix is available from Microsoft to address this issue.
CVSS v3.1
Score 7.5high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-49171) involves a use-after-free condition in the Microsoft Windows Speech component on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local access with limited privileges and user interaction, but successful exploitation can lead to a complete system compromise with high impact on confidentiality, integrity, and availability. Microsoft has released an official patch to remediate this issue.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate privileges, potentially gaining full control over the affected system. The vulnerability impacts confidentiality, integrity, and availability at a high level, enabling significant compromise of the 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-2026-49171 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-2026-49171","vendor":"Microsoft"}]
Threat ID: 6a566f6a68715ace43e6b3c0
Added to database: 07/14/2026, 17:18:34 UTC
Last enriched: 07/15/2026, 01:49:16 UTC
Last updated: 07/15/2026, 03:02:31 UTC
Views: 3
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