CVE-2026-70339: Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
Other sources
Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
— 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 151.0.4129.78
Event History
Frequently Asked Questions
What is the severity of CVE-2026-70339?
CVE-2026-70339 has a medium severity rating of 5.4.
How do I fix CVE-2026-70339?
To mitigate CVE-2026-70339, ensure that Microsoft Edge (Chromium-based) is updated to the latest version as provided by Microsoft.
What type of vulnerability is CVE-2026-70339?
CVE-2026-70339 is classified as a Remote Code Execution vulnerability.
Who is affected by CVE-2026-70339?
CVE-2026-70339 affects users of Microsoft Edge (Chromium-based).
What could an attacker achieve using CVE-2026-70339?
An unauthorized attacker could execute code remotely over a network using CVE-2026-70339.