CVE-2026-18164: Flow Neuroscience FL-100 Use of Hard-coded Credentials

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-13 · updated 2026-09-08
Weakness: CWE-798

Description

An undocumented hard-coded credential, shared by all device units, is authorized to bypass authentication. This allows an attacker within Bluetooth range to arbitrarily manipulate brain stimulation parameters and state.

Affected products

Flow Neuroscience FL-100: before July 2026 — fixed in July 2026
Halo Neuroscience FL-100: before July 2026 — fixed in July 2026

How to fix

Upgrade to a fixed version: Flow Neuroscience FL-100 July 2026; Halo Neuroscience FL-100 July 2026. Check the vendor advisory for mitigations.

References

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsma-26-225-01.json
https://www.cisa.gov/news-events/ics-medical-advisories/icsma-26-225-01

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