CVE-2026-66315

HIGH

Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

Title source: cna
STIX 2.1

Description

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

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66315

Scores

CVSS v3 7.5
EPSS 0.0061
EPSS Percentile 46.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-416
Status published
Products (2)
microsoft/edge_chromium < 151.0.4129.59
Microsoft/Microsoft Edge (Chromium-based) 1.0.0.0 - 151.0.4129.59
Published Aug 04, 2026
Tracked Since Aug 04, 2026