Time-of-Check Time-of-Use Race Condition in Microsoft Edge for Android

Publication date: 2026-07-03

Last updated on: 2026-07-03

Assigner: Microsoft Corporation

Description

Time-of-check time-of-use (toctou) race condition in Microsoft Edge for Android allows an unauthorized attacker to execute code over a network.

CVSS Scores

EPSS Scores

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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-2026-58299

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	edge	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-367	The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.

Attack-Flow Graph

Executive Summary

This vulnerability is a time-of-check time-of-use (TOCTOU) race condition found in Microsoft Edge for Android. It allows an unauthorized attacker to execute code remotely over a network by exploiting the timing gap between checking a condition and using the result of that check.

Impact Analysis

An attacker exploiting this vulnerability could execute arbitrary code on your device remotely, potentially leading to full compromise of confidentiality, integrity, and availability of your data and system.

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