Information Disclosure Vulnerability in Microsoft Edge by Microsoft
CVE-2026-66314

6.5MEDIUM

Key Information:

Vendor

Microsoft
Status
Microsoft Edge (chromium-based)
Vendor
CVE Published:
3 August 2026

What is CVE-2026-66314?

A time-of-check to time-of-use (toctou) race condition vulnerability exists in Microsoft Edge (Chromium-based). This flaw may allow unauthorized attackers to access sensitive information over a network, potentially leading to exposure of confidential data. Users are recommended to apply the latest security updates and patches to mitigate the risk associated with this vulnerability.

Affected Version(s)

Microsoft Edge (Chromium-based) 1.0.0.0 < 151.0.4129.59

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.