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Fencer Vulns
critical 9.8

CVE-2021-41292 json

ECOA BAS controller - Broken Authentication

published 2021-09-30 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-28322

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 67%
public exploits
0
none known

Summary

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.

Exploit prediction

1.17% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD 2.0 6.4 AV:N/AC:L/Au:N/C:P/I:P/A:N

Affected products

  • ECOA ECS Router Controller ECS (FLASH)
  • ECOA RiskBuster Terminator E6L45
  • ECOA RiskBuster System RB 3.0.0
  • ECOA RiskBuster System TRANE 1.0
  • ECOA Graphic Control Software
  • ECOA SmartHome II E9246
  • ECOA RiskTerminator

Classification

Weakness
  • CWE-288 Authentication Bypass Using an Alternate Path or Channel
  • CWE-287 Improper Authentication

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.