CVE-2026-50521 Details
Description
Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.
A use-after-free vulnerability has been identified in Microsoft Edge (Chromium-based) versions 149.0.4022.67 and 149.0.4022.68. This vulnerability allows an authorized attacker to execute code remotely. The issue arises from improper memory management, which can be exploited by tricking a user into interacting with a malicious request that appears legitimate. Once the user approves the request, the attacker could gain access to sensitive information or execute unauthorized actions on the user's behalf.
Users can download the security update for this vulnerability through the Microsoft Update Catalog. Instructions for applying the update can be found in the Microsoft Edge Release Notes.
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 Jul 2, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50521 | [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 | < 149.0.4022.67 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 3, 2026 | CVE Modified | CISA-ADP |
| Jul 2, 2026 | Initial Analysis | [email protected] |
| Jul 2, 2026 | CVE Modified | CISA-ADP |
| Jul 1, 2026 | New CVE Received | [email protected] |