Use-After-Free in Microsoft Edge Chromium

Publication date: 2026-07-03

Last updated on: 2026-07-03

Assigner: Microsoft Corporation

Description

Operation on a resource after expiration or release in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-07-03

Last Modified

2026-07-03

Generated

2026-07-04

AI Q&A

2026-07-04

EPSS Evaluated

N/A

NVD

CVE-2026-58291

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	edge	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-672	The product uses, accesses, or otherwise operates on a resource after that resource has been expired, released, or revoked.

Attack-Flow Graph

Executive Summary

This vulnerability in Microsoft Edge (Chromium-based) involves performing an operation on a resource after it has expired or been released. This flaw allows an unauthorized attacker to disclose information over a network.

Impact Analysis

The vulnerability can lead to unauthorized disclosure of sensitive information over a network, potentially exposing private or confidential data to attackers.

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