CVE-2026-66325
Received Received - Intake

Microsoft Edge SSRF Vulnerability Enables Network Spoofing

Vulnerability report for CVE-2026-66325, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-08-04

Last updated on: 2026-08-04

Assigner: Microsoft Corporation

Description

Server-side request forgery (ssrf) in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.

CVSS Scores

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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
EUVD

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-918 The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

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Executive Summary

This is a server-side request forgery (SSRF) vulnerability in Microsoft Edge (Chromium-based). It allows an unauthorized attacker to perform spoofing over a network by tricking the server into making unauthorized requests.

Impact Analysis

An attacker could exploit this to access internal systems, steal sensitive data, or perform unauthorized actions on behalf of the user. It may lead to data breaches or further network compromise.

Compliance Impact

This vulnerability could lead to unauthorized data access or exfiltration, violating GDPR (data protection) and HIPAA (health data privacy) requirements. Non-compliance may result in legal penalties or reputational damage.

Mitigation Strategies

Update Microsoft Edge to the latest version to patch the SSRF vulnerability. Monitor network traffic for unusual requests and restrict outbound connections to trusted domains.

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