PatchTheCVECVE-2021-41290: ECOA BAS controller suffers from an arbitrary file write and path traversal vulnerability
CVE-2021-41290 is a critical-severity flaw (CVSS 9.8) 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 an arbitrary file write and path traversal vulnerability. Using the POST parameters, unauthenticated attackers can remotely set arbitrary values for location and content type and gain the possibility to execute arbitrary code on the affected device.
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
No fix is published yet: follow the downgrade or mitigation steps.
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
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-2021-41290?
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-2021-41290 being exploited?
CVE-2021-41290 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-2021-41290 affect?
CVE-2021-41290 affects ecs router controller-ecs firmware, riskbuster firmware, riskterminator. Severity is critical (CVSS 9.8). ECOA BAS controller suffers from an arbitrary file write and path traversal vulnerability. Using the POST parameters, unauthenticated attackers can remotely set arbitrary values for location and content type and gain the possibility to exec
How urgent is CVE-2021-41290?
Priority 60/100. Critical severity; 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