ECOA BAS controller - Exposure of Sensitive Information to an Unauthorized Actor

published 2021-09-30 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-28331

cvss: 9.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 2.0%; EPSS 2.0% chance of exploitation in 30 days, percentile 80%
public exploits: 0; none known

ECOA BAS controller is vulnerable to configuration disclosure when direct object reference is made to the specific files using an HTTP GET request. This will enable the unauthenticated attacker to remotely disclose sensitive information and help her in authentication bypass, privilege escalation and full system access.

Exploit prediction

1.99% chance of exploitation in the next 30 days, higher than 80% 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	2.0	10.0	AV:N/AC:L/Au:N/C:C/I:C/A:C

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-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-639 Authorization Bypass Through User-Controlled Key

References

twcert.org.tw /tw/cp-132-5137-730a6-1.html
third-party-advisory

Sources

CVE List CVE-2021-41301
NVD CVE-2021-41301

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.

Summary