CVE-2026-66315: Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Other sources
Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 151.0.4129.59
Event History
Frequently Asked Questions
What is the severity of CVE-2026-66315?
CVE-2026-66315 has a severity rating of high with a score of 7.5.
What type of vulnerability is CVE-2026-66315?
CVE-2026-66315 is a remote code execution vulnerability due to use after free in Microsoft Edge (Chromium-based).
How do I fix CVE-2026-66315?
To mitigate CVE-2026-66315, ensure that you are using the latest version of Microsoft Edge (Chromium-based) with all security updates applied.
Who is affected by CVE-2026-66315?
CVE-2026-66315 affects users of Microsoft Edge (Chromium-based), particularly those who do not update regularly.
What can attackers achieve with CVE-2026-66315?
Attackers exploiting CVE-2026-66315 can execute arbitrary code on the victim's machine over a network.