CVE-2026-66312
Received Received - Intake

Buffer Over-Read in Microsoft Edge Chromium

Publication date: 2026-08-04

Last updated on: 2026-08-04

Assigner: Microsoft Corporation

Description
Buffer over-read in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.

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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-2026-66312
EUVD
EUVD-2026-52524

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-126 The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.

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Executive Summary

This is a buffer over-read vulnerability in Microsoft Edge (Chromium-based). It allows an authorized attacker to read memory outside the intended buffer, potentially exposing sensitive data or enabling further exploitation.

Impact Analysis

An attacker could exploit this to access sensitive information, such as user credentials or personal data, or to execute arbitrary code on your system. This could lead to data breaches or system compromise.

Mitigation Strategies

Update Microsoft Edge to the latest version immediately to patch the buffer over-read vulnerability. Disable unnecessary network services and restrict user permissions to reduce attack surface.

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