CVE-2026-66311
Received Received - Intake

Missing Authorization in Microsoft Edge Allows Local Tampering

Publication date: 2026-08-04

Last updated on: 2026-08-04

Assigner: Microsoft Corporation

Description
Missing authorization in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering locally.

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Meta Information

Published
2026-08-04
Last Modified
2026-08-04
Generated
2026-08-04
AI Q&A
2026-08-04
EPSS Evaluated
N/A
NVD
CVE-2026-66311
EUVD
EUVD-2026-52531

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
microsoft edge *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

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Executive Summary

This vulnerability involves missing authorization in Microsoft Edge (Chromium-based). An unauthorized attacker can perform tampering actions locally on the affected system.

Impact Analysis

An attacker could modify local data or settings on your system without permission. This may lead to unauthorized changes, data tampering, or potential system instability.

Mitigation Strategies

Update Microsoft Edge to the latest version immediately to patch the missing authorization vulnerability. Monitor for unusual local tampering activities and restrict local user permissions if possible.

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