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MEDIUM · 6.2

CVE-2026-66311

Missing authorization in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering locally.

Vulnerability Description

Missing authorization in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering locally.

CVSS Score

6.2

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE

Affected Products

VendorProductVersions
MicrosoftEdge Chromium< 151.0.4129.59

Related Weaknesses (CWE)

CWE-862

References

FAQ

What is CVE-2026-66311?

CVE-2026-66311 is a vulnerability with a CVSS score of 6.2 (MEDIUM). Missing authorization in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering locally.

How severe is CVE-2026-66311?

CVE-2026-66311 has been rated MEDIUM with a CVSS base score of 6.2/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-66311?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Edge Chromium.