CVE-2026-33874: Gematik Authenticator securely authenticates users for login to digital health applications

Routine

HIGH 7.8UPGRADE

CVE-2026-33874 is a high-severity flaw (CVSS 7.8) affecting authenticator. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Gematik Authenticator securely authenticates users for login to digital health applications. Starting in version 4.12.0 and prior to version 4.16.0, the Mac OS version of the Authenticator is vulnerable to remote code execution, triggered when victims open a malicious file. Update the gematik Authenticator to version 4.16.0 or greater to receive a patch. There are no known workarounds.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-78
Published	2026-03-27
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: gematik

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-27 21:17 UTCPublished CVE record published
2026-10-26 00:10 UTCUpdated Record last modified

gematik authenticator UPGRADE

Affected: >= 4.12.0 and < 4.16.0

Fixed in: 4.16.0

Safe to downgrade to: a release before 4.12.0

1. Check installed version

apt-cache policy authenticator || rpm -q authenticator || authenticator --version

2. UPGRADE to 4.16.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade authenticator

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade authenticator

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 4.12.0 (Debian / Ubuntu)

apt-cache madison authenticator sudo apt install authenticator=<VERSION_BEFORE_4.12.0> sudo apt-mark hold authenticator

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list authenticator sudo dnf downgrade authenticator-<VERSION_BEFORE_4.12.0> sudo dnf versionlock add authenticator

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-33874?

authenticator: upgrade to 4.16.0. Exact commands for each OS are on this page.

Is CVE-2026-33874 being exploited?

CVE-2026-33874 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-33874 affect?

CVE-2026-33874 affects authenticator. Severity is high (CVSS 7.8). Gematik Authenticator securely authenticates users for login to digital health applications. Starting in version 4.12.0 and prior to version 4.16.0, the Mac OS version of the Authenticator is vulnerable to remote code execution, triggered w

How urgent is CVE-2026-33874?

Priority 33/100. High severity

References

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