Security readout for executives and security teams
Plain-English summary
Sloan BLE-enabled faucets and flushometers can expose controls without authentication. A nearby person may change device behavior, affect water flow or sensor sensitivity, and view maintenance information. This is mainly a facilities and operational risk, not a traditional network breach.
Executive priority
Treat this as a moderate facilities security issue. It can affect water fixtures and maintenance data, but evidence points to proximity-based BLE access and no confirmed active exploitation in the provided sources.
Technical view
CVE-2021-20107 describes unauthenticated Bluetooth Low Energy access in Sloan SmartFaucets and Flushometers. Sources state BLE characteristics can be read and written, including characteristics tied to water flow, sensor sensitivity, and maintenance data. CVSS, CWE, patch status, and detailed version boundaries are not provided.
Likely exposure
Likely exposure is facilities using Sloan Optima EAF, Optima ETF/EBF, BASYS EFX, or SOLIS devices with BLE connectivity, especially in publicly accessible restrooms. Because the interface is BLE, practical exposure is proximity-based rather than internet-wide.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. The issue is unauthenticated local wireless access with potential physical effects and information disclosure. Public exploit status is not established in the provided sources.
Researcher notes
The public record lacks CVSS, CWE, and explicit remediation details. Avoid assuming internet exposure. Focus validation on BLE-enabled Sloan units, authentication behavior, writable characteristics, and whether vendor guidance identifies fixed firmware or compensating controls.
Mitigation direction
- Inventory Sloan BLE-enabled faucets and flushometers by model and location.
- Check Sloan and Tenable guidance for supported fixes or configuration changes.
- Prioritize publicly accessible facilities and high-traffic restrooms.
- Restrict unauthorized close physical access where operational impact would matter.
- Review maintenance procedures for unexpected sensor or flow changes.
Validation and detection
- Confirm whether installed devices match the named Sloan product families.
- Verify firmware, model, and configuration against vendor guidance.
- Use authorized BLE assessment to check for unauthenticated exposure.
- Review facility logs and complaints for abnormal flow or sensor behavior.
- Document affected locations and remediation status for facilities teams.
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.
CVE-2021-20107 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.tenable.com/security/research/tra-2021-26-0CVE 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.