CVE-2026-62889: CWE-415: Double Free in Microsoft Windows 10 Version 1607
Double free in Windows Secure Socket Tunneling Protocol (SSTP) allows an unauthorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability involves a double free condition in the SSTP implementation on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation could allow remote code execution without privileges or user interaction. The CVSS v3.1 base score is 8.1, reflecting high impact on confidentiality, integrity, and availability. Microsoft has released an official patch to remediate this vulnerability.
Potential Impact
Successful exploitation enables an unauthenticated attacker to execute arbitrary code remotely, potentially leading to full system compromise. The vulnerability affects confidentiality, integrity, and availability of the affected 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-2026-62889 to remediate this vulnerability.
CVE-2026-62889: CWE-415: Double Free in Microsoft Windows 10 Version 1607
Description
Double free in Windows Secure Socket Tunneling Protocol (SSTP) allows an unauthorized attacker to execute code over a network.
CVSS v3.1
Score 8.1high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a double free condition in the SSTP implementation on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation could allow remote code execution without privileges or user interaction. The CVSS v3.1 base score is 8.1, reflecting high impact on confidentiality, integrity, and availability. Microsoft has released an official patch to remediate this vulnerability.
Potential Impact
Successful exploitation enables an unauthenticated attacker to execute arbitrary code remotely, potentially leading to full system compromise. The vulnerability affects confidentiality, integrity, and availability of the affected 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-2026-62889 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-14T21:13:55.101Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62889","vendor":"Microsoft"}]
Threat ID: 6a7b5821bf8831d539156151
Added to database: 08/11/2026, 17:13:05 UTC
Last enriched: 08/11/2026, 20:58:38 UTC
Last updated: 08/12/2026, 02:01:12 UTC
Views: 4
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