CVE-2025-5943 MicroDicom DICOM Viewer Out-of-bounds Write
Remote attackers can execute arbitrary code by tricking users into opening malicious DICOM files or visiting malicious websites.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-5943?
CVE-2025-5943 is a high-severity memory corruption vulnerability in MicroDicom DICOM Viewer, published on 10 Jun 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
MicroDicom
DICOM Viewer suffers from an out-of-bounds write vulnerability. Remote attackers are able to exploit this issue to potentially execute arbitrary code on affected installations of DICOM Viewer. User interaction is required to exploit the vulnerability in that the user must either visit a malicious website or open a malicious DICOM file locally.
Weakness: CWE-787
Which versions are affected by CVE-2025-5943?
How do I fix CVE-2025-5943?
No fix has been published for CVE-2025-5943 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-5943 being exploited?
There is no known exploitation of CVE-2025-5943 in the wild and no public exploit code.
Sources
Also known as GHSA-863r-cfhv-7rmg.