CVE-2026-45599: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Use after free in Universal Plug and Play (upnp.dll) allows an unauthorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability is a use-after-free condition in the upnp.dll module of Windows 10 Version 1607 (build 10.0.14393.0). Exploitation could allow remote code execution by an unauthenticated attacker over the network. The vulnerability is tracked as CVE-2026-45599 and has a CVSS 3.1 base score of 8.1, indicating high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code remotely without any privileges or user interaction, 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. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45599 to remediate this vulnerability.
CVE-2026-45599: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Description
Use after free in Universal Plug and Play (upnp.dll) 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 is a use-after-free condition in the upnp.dll module of Windows 10 Version 1607 (build 10.0.14393.0). Exploitation could allow remote code execution by an unauthenticated attacker over the network. The vulnerability is tracked as CVE-2026-45599 and has a CVSS 3.1 base score of 8.1, indicating high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code remotely without any privileges or user interaction, 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. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45599 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-12T19:55:45.730Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45599","vendor":"Microsoft"}]
Threat ID: 6a284ce48dd33fbd85664e58
Added to database: 06/09/2026, 17:27:00 UTC
Last enriched: 07/29/2026, 21:59:44 UTC
Last updated: 07/31/2026, 21:26:44 UTC
Views: 80
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