CVE-2026-5444: Heap Buffer Overflow in PAM Image Buffer Allocation
A heap buffer overflow vulnerability exists in the PAM image parsing logic. When Orthanc processes a crafted PAM image embedded in a DICOM file, image dimensions are multiplied using 32-bit unsigned arithmetic. Specially chosen values can cause an integer overflow during buffer size calculation, resulting in the allocation of a small buffer followed by a much larger write operation during pixel processing.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-5444?
CVE-2026-5444 has a high severity rating of 7.1 according to the CVSS v3.1.
How do I fix CVE-2026-5444?
To fix CVE-2026-5444, update to the latest version of Orthanc that addresses this heap buffer overflow vulnerability.
What software is affected by CVE-2026-5444?
CVE-2026-5444 affects the Orthanc and Orthanc-server software.
What type of vulnerability is CVE-2026-5444?
CVE-2026-5444 is a heap buffer overflow vulnerability caused by an integer overflow in PAM image parsing.
What are the potential impacts of CVE-2026-5444?
Exploitation of CVE-2026-5444 could lead to denial of service or arbitrary code execution due to buffer overflow.