---
id: "CVE-2017-0210"
kind: "vulnerability"
aliases: ["CVE-2017-0210"]
title: "Microsoft Internet Explorer: Microsoft Internet Explorer Privilege Escalation Vulnerability"
severity: "high"
cvss: 8.8
epss: 0.22334
exploited: true
status: "open"
category: "other"
products: [{"name": "Microsoft Internet Explorer", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["exploited", "internet-explorer", "other", "windows"]
not_affected_if: ["no-internet-explorer-installed"]
published_at: "2017-04-12T14:59:01+00:00"
first_seen_at: "2026-10-23T19:11:52+00:00"
updated_at: "2026-10-23T21:57:35+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2017-0210", "first_seen_at": "2026-10-23T19:11:52+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2017-0210", "first_seen_at": "2026-10-23T19:13:45+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-0210", "first_seen_at": "2026-10-23T21:57:35+00:00"}]
---

# Microsoft Internet Explorer: Microsoft Internet Explorer Privilege Escalation Vulnerability

Internet Explorer does not properly enforce cross-domain policies, letting a malicious page read information from other sites. CISA lists it as actively exploited.

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

## Affected

- vendor:Microsoft Internet Explorer affected ? fixed ?

## Fix

Apply the Microsoft updates for Internet Explorer per vendor instructions (CISA required action); the specific KB or version is not in the sources.

## Timeline

- 2026-10-23T19:11:52+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2017-0210
- 2026-10-23T19:13:45+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2017-0210
- 2026-10-23T21:57:35+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2017-0210

## From the sources

An elevation of privilege vulnerability exists when Internet Explorer does not properly enforce cross-domain policies, which could allow an attacker to access information from one domain and inject it into another domain, aka "Internet Explorer Elevation of Privilege Vulnerability."

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