CVE-2025-9732 DCMTK dcm2img diybrpxt.h memory corruption

Medium 4.8 Published 31 Aug 2025 Updated 2 Sep 2025

A memory corruption vulnerability in DCMTK's dcm2img tool allows local attackers to potentially execute arbitrary code or cause a denial of service.

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

What is CVE-2025-9732?

CVE-2025-9732 is a medium-severity memory corruption vulnerability in DCMTK, published on 31 Aug 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability was identified in DCMTK up to 3.6.9. This affects an unknown function in the library dcmimage/include/dcmtk/dcmimage/diybrpxt.h of the component dcm2img. Such manipulation leads to memory corruption. Local access is required to approach this attack. The name of the patch is 7ad81d69b. It is best practice to apply a patch to resolve this issue.

Weakness: CWE-787, CWE-119

Which versions are affected by CVE-2025-9732?

It affects 1 product.

Linux distribution packages (1)

dcmtk openSUSE:Tumbleweed All versions 3.6.9-4.1

Products include Offis Dcmtk.

How do I fix CVE-2025-9732?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2025-9732 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-9732 exists.

Sources

Also known as DEBIAN-CVE-2025-9732, GHSA-qw76-8prh-rg34, MGASA-2025-0265, UBUNTU-CVE-2025-9732, openSUSE-SU-2025:15504-1.