CVE-2026-34346: CWE-319: Cleartext Transmission of Sensitive Information in Microsoft Windows 10 Version 1607
CVE-2026-34346 is a vulnerability in Microsoft Windows 10 Version 1607 where the Windows Ancillary Function Driver for WinSock transmits sensitive information in cleartext. This allows an authorized local attacker to disclose sensitive information. The vulnerability has a medium severity rating and a CVSS score of 5.5. An official fix is available from Microsoft.
AI Analysis
Technical Summary
This vulnerability involves the cleartext transmission of sensitive information within the Windows Ancillary Function Driver for WinSock on Windows 10 Version 1607 (build 10.0.14393.0). An authorized attacker with local access can exploit this flaw to disclose sensitive information. The issue is classified under CWE-319 (Cleartext Transmission of Sensitive Information). Microsoft has published an official fix to address this vulnerability.
Potential Impact
The vulnerability allows an authorized local attacker to disclose sensitive information due to cleartext transmission in the affected component. There is no indication of impact on integrity or availability. 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 in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34346 to remediate this vulnerability.
CVE-2026-34346: CWE-319: Cleartext Transmission of Sensitive Information in Microsoft Windows 10 Version 1607
Description
CVE-2026-34346 is a vulnerability in Microsoft Windows 10 Version 1607 where the Windows Ancillary Function Driver for WinSock transmits sensitive information in cleartext. This allows an authorized local attacker to disclose sensitive information. The vulnerability has a medium severity rating and a CVSS score of 5.5. An official fix is available from Microsoft.
CVSS v3.1
Score 5.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves the cleartext transmission of sensitive information within the Windows Ancillary Function Driver for WinSock on Windows 10 Version 1607 (build 10.0.14393.0). An authorized attacker with local access can exploit this flaw to disclose sensitive information. The issue is classified under CWE-319 (Cleartext Transmission of Sensitive Information). Microsoft has published an official fix to address this vulnerability.
Potential Impact
The vulnerability allows an authorized local attacker to disclose sensitive information due to cleartext transmission in the affected component. There is no indication of impact on integrity or availability. 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 in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34346 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-03-26T21:02:16.446Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34346","vendor":"Microsoft"}]
Threat ID: 6a566f6568715ace43e6b297
Added to database: 07/14/2026, 17:18:29 UTC
Last enriched: 07/15/2026, 02:04:46 UTC
Last updated: 07/15/2026, 02:04:46 UTC
Views: 2
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