CVE-2026-66311 Details
Description
Missing authorization in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering locally.
A tampering vulnerability has been identified in Microsoft Edge (Chromium-based) versions through 151.0.4129.59. The issue arises from missing authorization, which allows an unauthorized attacker to manipulate data locally. Exploitation of this vulnerability could lead to unauthorized access to sensitive user data, although it does not allow for modification of data or disruption of service.
Users can download the security update for Microsoft Edge (Chromium-based) from the Microsoft Edge Security Update page. For detailed release notes, visit the Microsoft Edge Release Notes Security page.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Aug 4, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66311 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-862 | Missing Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| microsoft edge chromium | < 151.0.4129.59 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 6, 2026 | Initial Analysis | [email protected] |
| Aug 4, 2026 | CVE Modified | CISA-ADP |
| Aug 4, 2026 | New CVE Received | [email protected] |