CVE-2026-58547

Analyzed Analyzed - Analysis Complete

Heap-based Buffer Overflow in UPnP Library

Publication date: 2026-07-14

Last updated on: 2026-07-22

Assigner: Microsoft Corporation

Description

Heap-based buffer overflow in Universal Plug and Play (upnp.dll) allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-07-14

Last Modified

2026-07-22

Generated

2026-08-04

AI Q&A

2026-07-15

EPSS Evaluated

2026-08-02

NVD

CVE-2026-58547

EUVD

EUVD-2026-44297

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_11_26h1	to 10.0.28000.2269 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2269 (exc)
microsoft	windows_10_1809	to 10.0.17763.9020 (exc)
microsoft	windows_10_1809	to 10.0.17763.9020 (exc)
microsoft	windows_11_24h2	to 10.0.26100.8875 (exc)
microsoft	windows_11_24h2	to 10.0.26100.8875 (exc)
microsoft	windows_server_2025	to 10.0.26100.33158 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7548 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7548 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7548 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7548 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7548 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7548 (exc)
microsoft	windows_11_25h2	to 10.0.26200.8875 (exc)
microsoft	windows_11_25h2	to 10.0.26200.8875 (exc)
microsoft	windows_server_2022	to 10.0.20348.5386 (exc)
microsoft	windows_server_2019	to 10.0.17763.9020 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-122	A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

Attack-Flow Graph

Executive Summary

This is a heap-based buffer overflow vulnerability in the Universal Plug and Play (UPnP) component (upnp.dll) in Microsoft systems. It allows an authorized attacker with local access to exploit the overflow and elevate their privileges on the affected system.

Detection Guidance

Detection requires analyzing the Universal Plug and Play (UPnP) service for heap-based buffer overflows in upnp.dll. Check for crashes or unusual memory usage in UPnP processes. Use system monitoring tools like Windows Event Viewer for application crashes related to upnp.dll. No specific commands are provided in the available resources.

Impact Analysis

An attacker with local access could exploit this to gain higher privileges, potentially allowing them to install programs, view or delete data, or create new accounts with full user rights. This could lead to system compromise or unauthorized control.

Compliance Impact

This vulnerability could lead to unauthorized access or privilege escalation, which may violate compliance requirements for data protection standards like GDPR or HIPAA. Organizations must address it to maintain regulatory compliance and protect sensitive data.

Mitigation Strategies

Apply the latest security updates from Microsoft for Universal Plug and Play components to address the heap-based buffer overflow vulnerability.

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