CVE-2026-66798
Received Received - Intake

Use After Free in Microsoft Edge Chromium

Publication date: 2026-08-28

Last updated on: 2026-08-28

Assigner: Microsoft Corporation

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

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Meta Information

Published
2026-08-28
Last Modified
2026-08-28
Generated
2026-08-29
AI Q&A
2026-08-29
EPSS Evaluated
N/A
NVD
CVE-2026-66798
EUVD
EUVD-2026-67851

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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

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Executive Summary

This is a use-after-free vulnerability in Microsoft Edge (Chromium-based) that allows an unauthorized attacker to execute code remotely over a network.

Impact Analysis

An attacker could exploit this to run malicious code on your system, potentially leading to data theft, system compromise, or further network attacks.

Mitigation Strategies

Apply the latest security updates from Microsoft for Microsoft Edge (Chromium-based) as soon as possible to patch the use-after-free vulnerability.

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