Security readout for executives and security teams
Plain-English summary
This CVE affects ECOA BAS controller-related products and may let an unauthenticated remote attacker read arbitrary files from the device. The business risk is exposure of sensitive system information from building automation infrastructure. Sources do not confirm active exploitation or provide a named patch.
Executive priority
Treat as a high-priority exposure review for building automation environments. Prioritize internet-facing or third-party-accessible controllers first. Because the source bundle does not name a fix, remediation should start with vendor confirmation and immediate network exposure reduction.
Technical view
CVE-2021-41293 is a CWE-22 path traversal issue in ECOA BAS controller products. The record describes arbitrary file disclosure through a specific POST parameter without authentication. CVSS 3.1 is 7.5: network reachable, low complexity, no privileges, no user interaction, high confidentiality impact only.
Likely exposure
Exposure is most relevant where ECOA BAS controller products are reachable from untrusted networks, remote management paths, vendor access paths, or flat internal networks. Affected product names include ECS Router Controller ECS (FLASH), RiskBuster variants, Graphic Control Software, SmartHome II E9246, and RiskTerminator.
Exploitation context
The source bundle does not show CISA KEV listing or other evidence of active exploitation. The issue is still important because unauthenticated network file disclosure on BAS equipment can reveal configuration, credentials, topology, or operational details useful for follow-on compromise.
Researcher notes
The public record is concise and lacks exact parameter details, fixed versions, and remediation text. Avoid assuming product version scope beyond the listed affected products. The main confirmed impact is confidentiality loss through unauthenticated arbitrary file disclosure.
Mitigation direction
- Identify deployed ECOA products matching the affected product list.
- Check ECOA or TWCERT guidance for patched firmware or vendor-specific mitigations.
- Restrict BAS controller management interfaces to trusted administration networks only.
- Block direct internet access to affected BAS controller services.
- Monitor for unusual unauthenticated POST activity against controller web interfaces.
- Review exposed files or leaked configuration if suspicious access is found.
Validation and detection
- Inventory ECOA BAS controllers and related software by product name and deployment location.
- Confirm whether controller web interfaces are reachable from untrusted networks.
- Review vendor advisories for exact affected versions and remediation status.
- Check access logs for anomalous unauthenticated POST requests to controller endpoints.
- Document compensating controls where patch availability is unclear.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-41293 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.twcert.org.tw/tw/cp-132-5129-7e623-1.htmlCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.