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CVE-2026-33875

Gematik Authenticator vulnerability

9.3 CRITICALEPSS 0.47%
  1. Published27 Mar 2026

Description

Gematik Authenticator securely authenticates users for login to digital health applications. Versions prior to 4.16.0 are vulnerable to authentication flow hijacking, potentially allowing attackers to authenticate with the identities of victim users who click on a malicious deep link. Update Gematik Authenticator to version 4.16.0 or greater to receive a patch. There are no known workarounds.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Affected products

Gematik Authenticator< 4.16.0

Remediation

Fixed in
Gematik Authenticator≥ 4.16.0

References

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Frequently asked

Is CVE-2026-33875 being actively exploited?

CVE-2026-33875 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.47%.

How severe is CVE-2026-33875?

CVE-2026-33875 has a CVSS 3.1 base score of 9.3, rated critical. EPSS estimates a 0.47% probability of exploitation.

Which products are affected by CVE-2026-33875?

Affected products include Gematik Authenticator.

How do I fix CVE-2026-33875?

Upgrade affected software to a fixed version, for example Gematik Authenticator 4.16.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-33875 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.