Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Published June 26, 2026Updated July 2, 2026
Source data
Overview
Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.
Impact & technical details
Remote Code Execution
There are multiple update packages available for some of the affected software. Do I need to install all the updates listed in the Security Updates table for the software? Yes. Customers should apply all updates offered for the software installed on their systems.
According to the CVSS metrics, successful exploitation of this vulnerability could lead to major loss of confidentiality (C:H), and integrity (I:H), and some loss of availability (A:L). What does that mean for this vulnerability? An attacker who successfully exploited this vulnerability could view sensitive information such as other user's credentials (Confidentiality) and make changes to file contents on the target server (Integrity), and they might be able to force a crash within the server (Availability).
According to the CVSS metric, privileges required is low (PR:L). What does that mean for this vulnerability? Any authenticated attacker could trigger this vulnerability. It does not require admin or other elevated privileges.
How could an attacker exploit this vulnerability? An attacker could attempt to trick a user into interacting with a malicious request that appears legitimate. When the user approves the request, the attacker could cause the app to obtain an access token on the user’s behalf and send it to a location controlled by the attacker, without the user being clearly informed about what access is being granted.
What is the version information for this release? Microsoft Edge Version Date Released Based on Chromium Version 149.0.4022.68 06/14/2026 149.0.7827.103
What is the version information for this release? Microsoft Edge Version Date Released Based on Chromium Version 149.0.4022.67 06/15/2026 149.0.7827.103
- CVSS base score
- 8.3 / 10
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C
Highest base score supplied by MSRC for this record; the vector belongs to that score. Ratings can vary by product. Microsoft Important is displayed as High; Moderate is displayed as Medium.
Affected products
- Microsoft Edge (Chromium-based)
Source guidance
Remediation
- Release Notes
Patch availability is not confirmed by this dataset. Consult the vendor before selecting a remediation.
GTP recommendation · Rule-based guidance
Recommended next step
Review affected Microsoft products and apply the applicable security updates through your organization's normal patch-management process. Confirm availability and prerequisites in the Microsoft advisory.
Authoritative sources & updates
Findings and update information come from the linked publishers. GTP compiles the public record and provides the recommendation above. CVSS ratings shown here come from Microsoft. NVD references provide additional public context.
Managed by GTP?
Griffin Technology Partners managed customers may receive additional environment-specific security guidance and remediation assistance through their managed services relationship.
Security bulletins are provided for informational purposes and compiled from authoritative public sources. Vulnerability applicability varies by environment. Validate affected products, configuration, compatibility requirements, and vendor guidance before making production changes.