VulnerabilityAnalyzed
CVE-2026-5444
A heap buffer overflow vulnerability exists in the PAM image parsing logic.
HIGH 7.1EPSS 0.16%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.16%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
- EPSS
- 0.16% probability · 6th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- orthanc-server/orthanc
- Source
- cret@cert.org
References
- https://kb.cert.org/vuls/id/536588Third Party Advisory, VDB Entry
- https://www.machinespirits.de/Not Applicable
- https://www.orthanc-server.com/Product
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.