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CVE-2021-20107

18
FAUCET Score

CVE-2021-20107 describes an unauthenticated Bluetooth Low Energy (BLE) interface vulnerability in Sloan SmartFaucets (Optima EAF, Optima ETF/EBF, BASYS EFX) and SOLIS Flushometers. This medium-severity vulnerability (CVSS 5.4) allows an attacker in close proximity to read and write to BLE characteristics, potentially leading to unauthorized control over water flow, sensor sensitivity, and information disclosure. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:sloan:optima_eaf-100_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:sloan:optima_eaf-150_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:sloan:optima_eaf-200_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:sloan:optima_eaf-225_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:sloan:optima_eaf-250_firmware:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.54%
Probability of exploitation in next 30 days
EPSS Percentile
42.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0054 is in the 66th percentile among its peer group of 1,802 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (5)

asteriskvendor investigatingvia llm_extracted
ciscovendor investigatingvia llm_extracted
miniovendor investigatingvia llm_extracted
opensshvendor investigatingvia llm_extracted
railsvendor investigatingvia llm_extracted

Vendor Advisories (5)

opensshllm-openssh-86fac0859882a827MEDIUM

Sloan Smart Faucet Unauthenticated BLE

Jun 30, 2021
railsllm-rails-8227638774b0dffdMEDIUM

Sloan Smart Faucet Unauthenticated BLE

Jun 30, 2021
miniollm-minio-597acd5160d85ebeMEDIUM

Sloan Smart Faucet Unauthenticated BLE

Jun 30, 2021
ciscollm-cisco-1ce97e2a977db5a0MEDIUM

Sloan Smart Faucet Unauthenticated BLE

Jun 30, 2021
asteriskllm-asterisk-732e02f8d0ffd41aMEDIUM

Sloan Smart Faucet Unauthenticated BLE

Jun 30, 2021

References

tenable.com / security/research/tra-2021-26-0
ExploitThird Party Advisory