Vendor
Orthanc-Server vulnerabilities
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Junglewise Threat Intelligence has tracked 9 vulnerabilities in Orthanc-Server: 0 in the last 7 days and 0 in the last 90 days, 3 of them critical and 0 exploited in the wild. The most recent, CVE-2026-5445, was published on 9 April 2026. 1 technology has a page of its own.
- Last 7 days
- 0
- Last 90 days
- 0
- Critical, all time
- 3
- Exploited in the wild
- 0
About Orthanc-Server
Orthanc is an open-source DICOM server and medical imaging platform.
Orthanc-Server technologies
Latest Orthanc-Server vulnerabilities
- CVE-2026-5445: An out-of-bounds read vulnerability exists in the `DecodeLookupTable` function within `DicomImageDecoder.cpp`. The…criticalCVSS 9.1EPSS 0.7%
- CVE-2026-5444: A heap buffer overflow vulnerability exists in the PAM image parsing logic. When Orthanc processes a crafted PAM image…highCVSS 7.1EPSS 0.2%
- CVE-2026-5443: A heap buffer overflow vulnerability exists during the decoding of `PALETTE COLOR` DICOM images. Pixel length…criticalCVSS 9.8EPSS 0.6%
- CVE-2026-5442: A heap buffer overflow vulnerability exists in the DICOM image decoder. Dimension fields are encoded using Value…criticalCVSS 9.8EPSS 0.6%
- CVE-2026-5441: An out-of-bounds read vulnerability exists in the `DecodePsmctRle1` function of `DicomImageDecoder.cpp`. The…highCVSS 7.1EPSS 0.1%
- CVE-2026-5440: A memory exhaustion vulnerability exists in the HTTP server due to unbounded use of the `Content-Length` header. The…highCVSS 7.5EPSS 0.6%
- CVE-2026-5439: A memory exhaustion vulnerability exists in ZIP archive processing. Orthanc automatically extracts ZIP archives…highCVSS 7.5EPSS 0.4%
- CVE-2026-5438: A gzip decompression bomb vulnerability exists when Orthanc processes HTTP request with `Content-Encoding: gzip`. The…highCVSS 7.5EPSS 0.5%
- CVE-2026-5437: An out-of-bounds read vulnerability exists in `DicomStreamReader` during DICOM meta-header parsing. When processing…highCVSS 7.5EPSS 0.6%
Most severe Orthanc-Server vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-5442: A heap buffer overflow vulnerability exists in the DICOM image decoder. Dimension fields are encoded using Value…criticalCVSS 9.8EPSS 0.6%
- CVE-2026-5443: A heap buffer overflow vulnerability exists during the decoding of `PALETTE COLOR` DICOM images. Pixel length…criticalCVSS 9.8EPSS 0.6%
- CVE-2026-5445: An out-of-bounds read vulnerability exists in the `DecodeLookupTable` function within `DicomImageDecoder.cpp`. The…criticalCVSS 9.1EPSS 0.7%
- CVE-2026-5437: An out-of-bounds read vulnerability exists in `DicomStreamReader` during DICOM meta-header parsing. When processing…highCVSS 7.5EPSS 0.6%
- CVE-2026-5440: A memory exhaustion vulnerability exists in the HTTP server due to unbounded use of the `Content-Length` header. The…highCVSS 7.5EPSS 0.6%
- CVE-2026-5438: A gzip decompression bomb vulnerability exists when Orthanc processes HTTP request with `Content-Encoding: gzip`. The…highCVSS 7.5EPSS 0.5%
- CVE-2026-5439: A memory exhaustion vulnerability exists in ZIP archive processing. Orthanc automatically extracts ZIP archives…highCVSS 7.5EPSS 0.4%
- CVE-2026-5444: A heap buffer overflow vulnerability exists in the PAM image parsing logic. When Orthanc processes a crafted PAM image…highCVSS 7.1EPSS 0.2%
- CVE-2026-5441: An out-of-bounds read vulnerability exists in the `DecodePsmctRle1` function of `DicomImageDecoder.cpp`. The…highCVSS 7.1EPSS 0.1%
Vulnerabilities per week
Nothing was published in the last eight weeks. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Orthanc-Server vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/vendors/orthanc-server)<a href="https://junglewise.ai/threats/vendors/orthanc-server"><img src="https://junglewise.ai/threats/vendors/orthanc-server/badge.svg" alt="Orthanc-Server vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/vendors/orthanc-server.json, and this page as text at https://junglewise.ai/threats/vendors/orthanc-server.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Orthanc-Server vulnerabilities", https://junglewise.ai/threats/vendors/orthanc-server, 9 November 2026.