PatchTheCVECVE-2021-41293: ECOA BAS controller suffers from a path traversal vulnerability, causing arbitrary files disclosure
CVE-2021-41293 is a high-severity flaw (CVSS 7.5) affecting ecs router controller-ecs firmware, riskbuster firmware, riskterminator. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
ECOA BAS controller suffers from a path traversal vulnerability, causing arbitrary files disclosure. Using the specific POST parameter, unauthenticated attackers can remotely disclose arbitrary files on the affected device and disclose sensitive and system information.
Why this priority
- High severity
- EPSS top 3%: very likely to be exploited
- Remotely exploitable, no login, no user action
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 19.9% (top 3%) |
| CISA exploited list | No |
| Weakness | CWE-22 |
| Published | 2021-09-30 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- Nuclei scan template: ECOA Building Automation System - Arbitrary File Retrieval
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-41293?
ecs router controller-ecs firmware: mitigate or apply the listed mitigation; riskbuster firmware: mitigate or apply the listed mitigation; riskterminator: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2021-41293 being exploited?
CVE-2021-41293 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-41293 affect?
CVE-2021-41293 affects ecs router controller-ecs firmware, riskbuster firmware, riskterminator. Severity is high (CVSS 7.5). ECOA BAS controller suffers from a path traversal vulnerability, causing arbitrary files disclosure. Using the specific POST parameter, unauthenticated attackers can remotely disclose arbitrary files on the affected device and disclose sens
How urgent is CVE-2021-41293?
Priority 56/100. High severity; EPSS top 3%: very likely to be exploited; Remotely exploitable, no login, no user action
Related CVEs
- CVE-2021-41302 HIGH 7.3 MITIGATE MITIGATE ECOA BAS controller stores sensitive data (backup exports) in clear-text, thus the unauthenticated attacker ca
- CVE-2021-41301 CRITICAL 9.8 MITIGATE MITIGATE ECOA BAS controller is vulnerable to configuration disclosure when direct object reference is made to the spec
- CVE-2021-41300 CRITICAL 9.8 MITIGATE MITIGATE ECOA BAS controller’s special page displays user account and passwords in plain text, thus unauthenticated att
- CVE-2021-41299 CRITICAL 9.8 MITIGATE MITIGATE ECOA BAS controller is vulnerable to hard-coded credentials within its Linux distribution image, thus remote a
- CVE-2021-41298 HIGH 8.8 MITIGATE MITIGATE ECOA BAS controller is vulnerable to insecure direct object references that occur when the application provide