CVE-2026-96187: Microsoft Edge type confusion allows information disclosure

CVE-2026-96187 · Severity: high · CVSS 7.4 · Published 2026-10-29

Microsoft Edge is a web browser used by millions of users to access online content and services. A type confusion vulnerability in Edge allows an attacker to trick the browser into using incompatible data types, potentially exposing sensitive information from memory. An attacker can exploit this flaw remotely over a network to steal user data.

Technologies: Microsoft Edge. Vendors: Microsoft.

Quick answers

Is CVE-2026-96187 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-96187 being exploited in the wild.
How severe is CVE-2026-96187?
High severity, with a CVSS score of 7.4, published 29 October 2026.
Which products and versions are affected?
Microsoft Edge <UNKNOWN>.
Is there a fix for CVE-2026-96187?
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-2026-96187 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-96187?
Check whether you run Microsoft Edge at an affected version. 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 (CWE-843) in Microsoft Edge's Chromium engine allows an attacker to access memory resources using an incompatible type, leading to information disclosure. The vulnerability is reachable over the network without authentication or user interaction beyond normal browsing. A successful exploit enables reading sensitive data from the browser's memory space.

Affected products

  • Microsoft Edge <UNKNOWN>

Timeline

  • 2026-10-29: disclosed

References

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