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gematik Authenticator

Remote Code Execution

The macOS version of the gematik Authenticator is vulnerable to remote code execution, triggered when victims open a malicious file.

This advisory contains limited information during coordinated disclosure. Please check back later for full details.

SeverityHighCVSS 7.8CVSS 3.1 VectorAV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HCWECWE-78 (OS Command Injection)Productgematik AuthenticatorAffected Versionsv4.12.0 and later (macOS only)Fixed Inv4.16.0CVECVE-2026-33874GHSAGHSA-mjgm-7hwc-qqcr

Description

The macOS version of the gematik Authenticator is vulnerable to remote code execution, triggered when victims open a malicious file.

Impact

  • Remote code execution with the user's full privileges.

Mitigation

Update the gematik Authenticator to version 4.16.0 or greater.

References

How We Can Help

Who We Are

The security researchers behind this advisory.

Dr. Simon Weber Profile

Dr. rer. nat. Simon Weber

Senior Pentester & MedSec Researcher

I evaluate your SaMD with the same industry-defining security insight I contributed to the BAK MV for the revision of the B3S standard.

  • PhD on Hospital Cybersecurity
  • Critical vulnerabilities found in hospital systems
  • Alumni of THB MedSec Research Group
  • gematik Security Hero
Volker Schönefeld Profile

Dipl.-Inf. Volker Schönefeld

Senior Application Security Expert

As a former CTO and developer turned pentester, I work alongside your team to uncover vulnerabilities and find solutions that fit your architecture.

  • 20+ years as CTO, 50M+ app downloads
  • Architected and secured large-scale IoT fleets
  • Certified Web Exploitation Specialist
  • gematik Security Hero

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