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HIGH · 7.4

CVE-2026-66321

Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

Vulnerability Description

Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

CVSS Score

7.4

HIGH

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

Affected Products

VendorProductVersions
MicrosoftEdge Chromium< 151.0.4129.59

Related Weaknesses (CWE)

CWE-843

References

FAQ

What is CVE-2026-66321?

CVE-2026-66321 is a vulnerability with a CVSS score of 7.4 (HIGH). Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

How severe is CVE-2026-66321?

CVE-2026-66321 has been rated HIGH with a CVSS base score of 7.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-66321?

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