CVE-2026-66315 Details
Description
Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
A use-after-free vulnerability has been identified in Microsoft Edge (Chromium-based) version 151.0.4129.59. This vulnerability allows an unauthorized attacker to execute code remotely over the network. The issue arises from improper memory management, which can be exploited by crafting deceptive form elements that trigger automatic fill-in features, requiring user interaction to execute the malicious code.
Users can download the security update for Microsoft Edge (Chromium-based) version 151.0.4129.59 through the Microsoft Update Catalog.
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
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66315 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-416 | Use After Free | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| microsoft edge chromium | < 151.0.4129.59 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 6, 2026 | Initial Analysis | [email protected] |
| Aug 5, 2026 | CVE Modified | CISA-ADP |
| Aug 4, 2026 | CVE Modified | CISA-ADP |
| Aug 4, 2026 | New CVE Received | [email protected] |