---
id: "CVE-2026-88090"
kind: "vulnerability"
aliases: ["CVE-2026-88090"]
title: "Microsoft Edge: type confusion lets a remote attacker gain elevated privileges"
severity: "medium"
cvss: 5.4
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["chromium", "microsoft-edge", "other", "windows"]
not_affected_if: []
published_at: "2026-10-29T16:19:54+00:00"
first_seen_at: "2026-10-29T16:26:01+00:00"
updated_at: "2026-10-29T16:31:42+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-88090", "first_seen_at": "2026-10-29T16:26:01+00:00"}]
---

# Microsoft Edge: type confusion lets a remote attacker gain elevated privileges

A type confusion flaw in Chromium-based Microsoft Edge lets code access a resource as the wrong type. According to the NVD entry, an unauthorized attacker on the network can use it to elevate privileges.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Open Edge and go to `edge://settings/help` to read the installed version

## Timeline

- 2026-10-29T16:26:01+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-88090

## From the sources

Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges over a network.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_