CVE-2022-2121 OFFIS DCMTK NULL Pointer Dereference

High 7.5 Published 24 Jun 2022 Updated 3 Nov 2025

Attackers can cause a denial of service in applications using DCMTK by providing specially crafted DICOM files that trigger a null pointer dereference.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2022-2121?

CVE-2022-2121 is a high-severity vulnerability in OFFIS DCMTK, published on 24 Jun 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

OFFIS DCMTK's (All versions prior to 3.6.7) has a NULL pointer dereference vulnerability while processing DICOM files, which may result in a denial-of-service condition.

Weakness: CWE-476

Which versions are affected by CVE-2022-2121?

It affects 1 product.

Products include Offis Dcmtk.

How do I fix CVE-2022-2121?

Upgrade to a fixed version.

Is CVE-2022-2121 being exploited?

There is no known exploitation of CVE-2022-2121 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2022-2121, GHSA-jrq9-r9fx-4557, UBUNTU-CVE-2022-2121.