CVE-2026-44806: CWE-401: Missing Release of Memory after Effective Lifetime in Microsoft Windows 10 Version 1607
Description
Missing release of memory after effective lifetime in Windows Cryptographic Services allows an unauthorized attacker to deny service over a network.
CVSS v3.1
Score 5.3medium
Affected software
Microsoft
Windows 10 Version 1607
Microsoft
Windows 10 Version 1809
Microsoft
Windows 10 Version 21H2
Microsoft
Windows 10 Version 22H2
Microsoft
Windows 11 Version 24H2
Microsoft
Windows 11 Version 25H2
Microsoft
Windows 11 version 26H1
Microsoft
Windows Server 2012
Microsoft
Windows Server 2012 (Server Core installation)
Microsoft
Windows Server 2012 R2
Microsoft
Windows Server 2012 R2 (Server Core installation)
Microsoft
Windows Server 2016
Microsoft
Windows Server 2016 (Server Core installation)
Microsoft
Windows Server 2019
Microsoft
Windows Server 2019 (Server Core installation)
Microsoft
Windows Server 2022
Microsoft
Windows Server 2025
Microsoft
Windows Server 2025 (Server Core installation)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a failure to release memory after its effective lifetime within Windows Cryptographic Services on Windows 10 Version 1607 (build 10.0.14393.0). This memory leak can be exploited by an unauthorized attacker remotely to cause a denial of service condition. The CVSS 3.1 base score is 5.3, indicating a medium impact primarily due to availability loss. Microsoft has published an official fix to address this issue.
Potential Impact
An attacker can exploit this vulnerability remotely without privileges or user interaction to cause a denial of service by exhausting system memory resources. There is no impact on confidentiality or integrity, only availability is affected.
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-2026-44806 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-07T20:07:18.271Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44806","vendor":"Microsoft"}]
Threat ID: 6a566f6868715ace43e6b331
Added to database: 07/14/2026, 17:18:32 UTC
Last enriched: 08/13/2026, 14:15:52 UTC
Last updated: 10/13/2026, 18:57:37 UTC
Views: 95
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