CVE-2026-45635 Details
Description
Access of resource using incompatible type ('type confusion') in Universal Plug and Play (upnp.dll) allows an unauthorized attacker to execute code over a network.
A use-after-free vulnerability has been identified in the Universal Plug and Play (UPnP) component of Windows, specifically within the upnp.dll file. This vulnerability allows an unauthorized attacker to execute code remotely over a network. It affects multiple Windows versions, including various server and client editions. The vulnerability arises from improper handling of memory, which could be exploited by sending specially crafted data that causes the UPnP service to free memory incorrectly, potentially leading to arbitrary code execution.
Users can apply the security update provided by Microsoft to address this vulnerability. This security update is included in the Monthly Rollup for various Windows versions. Instructions for downloading the security update can be found in the Microsoft Update Catalog.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 10, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45635 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-416 | Use After Free | [email protected] |
| CWE-843 | Access of Resource Using Incompatible Type ('Type Confusion') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| microsoft windows 10 1607 | < 10.0.14393.9234 |
CPE
Remediation
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| microsoft windows 10 1809 | < 10.0.17763.8880 |
CPE
Remediation
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| microsoft windows 10 21h2 | < 10.0.19044.7417 |
CPE
Remediation
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| microsoft windows 10 22h2 | < 10.0.19045.7417 |
CPE
Remediation
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| microsoft windows 11 23h2 | < 10.0.22631.7219 |
CPE
Remediation
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| microsoft windows 11 24h2 | < 10.0.26100.8655 |
CPE
Remediation
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| microsoft windows 11 25h2 | < 10.0.26200.8655 |
CPE
Remediation
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| microsoft windows 11 26h1 | < 10.0.28000.2269 |
CPE
Remediation
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| microsoft windows server 2012 | r2 |
CPE
Remediation
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| microsoft windows server 2016 | < 10.0.14393.9234 |
CPE
Remediation
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| microsoft windows server 2019 | < 10.0.17763.8880 |
CPE
Remediation
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| microsoft windows server 2022 | < 10.0.20348.5256 |
CPE
Remediation
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| microsoft windows server 2025 | < 10.0.26100.32995 |
CPE
Remediation
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Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jul 9, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 11, 2026 | Initial Analysis | [email protected] |
| Jun 9, 2026 | New CVE Received | [email protected] |