CVE-2026-85898: Microsoft Edge type confusion vulnerability

CVE-2026-85898 · Severity: high · CVSS 8.8 · Published 2026-10-27

Microsoft Edge, a web browser, contains a type confusion flaw in its Chromium-based rendering engine that allows an attacker to execute code by sending a specially crafted web page. A user visiting a malicious website could have their system compromised, leading to data theft, malware installation, or complete system takeover.

Technologies: Microsoft Edge. Vendors: Microsoft.

Quick answers

Is CVE-2026-85898 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-85898 being exploited in the wild.
How severe is CVE-2026-85898?
High severity, with a CVSS score of 8.8, published 27 October 2026.
Which products and versions are affected?
Microsoft Edge.
Is there a fix for CVE-2026-85898?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-85898 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-85898?
Check whether you run Microsoft Edge. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A type confusion vulnerability in Microsoft Edge's Chromium engine allows an attacker to treat a resource as an incompatible type, leading to code execution. The vulnerability is reachable over the network through a malicious web page without requiring user authentication beyond visiting the site. The flaw results in arbitrary code execution in the browser's security context.

Affected products

  • Microsoft Edge

Timeline

  • 2026-10-27: disclosed

References

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