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HIGH · 7.5

CVE-2026-66315

Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

Vulnerability Description

Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

CVSS Score

7.5

HIGH

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

Affected Products

VendorProductVersions
MicrosoftEdge Chromium< 151.0.4129.59

Related Weaknesses (CWE)

CWE-416

References

FAQ

What is CVE-2026-66315?

CVE-2026-66315 is a vulnerability with a CVSS score of 7.5 (HIGH). Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

How severe is CVE-2026-66315?

CVE-2026-66315 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-66315?

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