CVE-2026-33875

Q: How do I fix CVE-2026-33875?

Upgrade authenticator to 4.16.0 or later.

Q: Is CVE-2026-33875 being actively exploited?

Not that we know of. CVE-2026-33875 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.27% is the estimated probability that it will be exploited in the next 30 days. That is higher than 18% of all scored CVEs.

Q: How severe is CVE-2026-33875?

CVE-2026-33875 has a CVSS v3 base score of 9.3, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2026-33875 affect?

Published advisories record a fix for authenticator (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

CRITICAL

9.3

CVSS v3

NVD

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.

CWE-940

How to fix

Remediation Available

authenticatorNVD

Affected:< 4.16.0Fixed in:4.16.0CVE-2026-33875derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Exploit Intelligence

0.27%probability of exploitation in 30 days

18thpercentile

Low risk: more likely to be exploited than 18% of all known CVEs.

References

Vendor Advisory1

github.com

Other references1

machinespirits.com

Related Vulnerabilities

Other CWE-940 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-61932	Critical	9.8	2.6%	KEV	-
CVE-2024-32388	Medium	5.3	1.2%	-	Fix
CVE-2025-23018	Medium	5.4	1.0%	-	-
CVE-2023-48387	High	8.8	1.0%	-	-
CVE-2023-3663	High	8.8	1.0%	-	Fix
CVE-2025-23019	Medium	5.4	1.0%	-	-

Common questions

How do I fix CVE-2026-33875?

Upgrade authenticator to 4.16.0 or later.

Is CVE-2026-33875 being actively exploited?

Not that we know of. CVE-2026-33875 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.27% is the estimated probability that it will be exploited in the next 30 days. That is higher than 18% of all scored CVEs.

How severe is CVE-2026-33875?

CVE-2026-33875 has a CVSS v3 base score of 9.3, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-33875 affect?

Published advisories record a fix for authenticator (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2026-33875

Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-03.