CVE-2026-21660CRITICAL 9.8EPSS p13.0%

CVE-2026-21660CVE-2026-21660

johnsoncontrols / frick_controls_quantum_hd_firmware

Description

A Hardcoded Email Credentials Saved as Plaintext in Firmware (CWE-256: Plaintext Storage of a Password) vulnerability in Frick Controls Quantum HD version 10.22 and prior lead to unauthorized access, exposure of sensitive information, and potential misuse or system compromise This issue affects Frick Controls Quantum HD version 10.22 and prior.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.23% probability of exploitation · percentile 13.0% · 2026-10-05T12:00:23Z
Published2026-02-27
Last modified2026-08-24

Underlying weaknesses· 2

CWE-256CWE-522

References

  1. https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-01
  2. https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories

2

TypeTargetConfidenceTier
WeaknessPlaintext Storage of a Passwordcwe-2560%live
WeaknessInsufficiently Protected Credentialscwe-5220%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.