CVE-2026-50521

Analyzed Analyzed - Analysis Complete

Use After Free in Microsoft Edge Chromium

Publication date: 2026-07-01

Last updated on: 2026-07-03

Assigner: Microsoft Corporation

Description

Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-07-01

Last Modified

2026-07-03

Generated

2026-07-22

AI Q&A

2026-07-02

EPSS Evaluated

2026-07-20

NVD

CVE-2026-50521

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	edge_chromium	to 149.0.4022.67 (exc)

Helpful Resources

Exploitability

CWE

KEV

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Attack-Flow Graph

Executive Summary

This vulnerability is a use-after-free issue in Microsoft Edge (Chromium-based). It allows an authorized attacker to execute code remotely over a network by exploiting the flaw.

Impact Analysis

An attacker who successfully exploits this vulnerability can execute arbitrary code on your system remotely. This can lead to unauthorized control over your device, potentially compromising confidentiality, integrity, and availability of your data.

Compliance Impact

The vulnerability allows remote code execution by an authorized attacker, which could lead to unauthorized access or manipulation of sensitive data.

Such unauthorized access or data breaches can impact compliance with standards and regulations like GDPR and HIPAA, which require protection of personal and sensitive information.

However, specific details on compliance impact are not provided in the available information.

Mitigation Strategies

To mitigate this vulnerability, it is recommended to apply the latest security updates provided by Microsoft for Microsoft Edge (Chromium-based). Keeping the browser updated ensures that the use after free vulnerability is patched, preventing remote code execution by attackers.

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