CVE-2026-45599
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Use After Free in UPnP Library Enables Remote Code Execution

Publication date: 2026-06-09

Last updated on: 2026-06-09

Assigner: Microsoft Corporation

Description
Use after free in Universal Plug and Play (upnp.dll) allows an unauthorized attacker to execute code over a network.
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Meta Information
Published
2026-06-09
Last Modified
2026-06-09
Generated
2026-06-10
AI Q&A
2026-06-09
EPSS Evaluated
N/A
NVD
CVE-2026-45599
EUVD
EUVD-2026-35556
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
microsoft universal_plug_and_play *
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-416 The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
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Executive Summary

This vulnerability is a use-after-free issue in the Universal Plug and Play (upnp.dll) component. It allows an unauthorized attacker to execute code remotely over a network.

Impact Analysis

An attacker exploiting this vulnerability can execute arbitrary code on the affected system remotely. This can lead to full compromise of the system, including unauthorized access, data theft, or disruption of services.

Compliance Impact

The vulnerability allows unauthorized remote code execution, which can lead to unauthorized access, data breaches, and potential compromise of sensitive information.

Such security breaches can impact compliance with common standards and regulations like GDPR and HIPAA, which require protection of personal and sensitive data against unauthorized access and disclosure.

Organizations affected by this vulnerability may face increased risk of non-compliance if the vulnerability is exploited and appropriate mitigations are not applied.

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