CVE intelligence and bounded remediation

CVE-2019-18248 — Biotronik Cardiomessenger Ii-S Gsm Firmware security vulnerability

Medium CVSS 4.3

BIOTRONIK CardioMessenger II, The affected products transmit credentials in clear-text prior to switching to an encrypted communication channel. An attacker can disclose the product’s client credentials for connecting to the BIOTRONIK Remote Communication infrastructure.

Severity
Medium
CVSS
4.3 (3.1)
Published
2020-06-29
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-319

Affected products

  • biotronik / cardiomessenger_ii-s_gsm_firmware / 2.20
  • biotronik / cardiomessenger_ii-s_t-line_firmware / 2.20

Matched remediation archetype

Cryptography, certificate, signature, and channel validation

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Inventory affected algorithms, key uses, trust stores, certificate validation settings, random sources, and plaintext channels across clients and services.
  • Determine which secrets, identities, signatures, or data protections depend on the affected primitive or validation path.
  • Check debug, compatibility, fallback, and hostname or audience override settings in build and runtime configuration.

Remediate safely

  • Use a maintained platform cryptographic API with approved algorithms, modes, parameters, randomness, and full peer identity validation.
  • Remove insecure fallback and validation bypasses; separate keys by purpose and load them from managed secret storage.
  • Plan rotation or reissuance for affected keys, certificates, tokens, hashes, or ciphertext and document compatibility sequencing.

Authoritative sources

Complete CVE record and remediation plan

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