Vendor
Orthanc
14 known vulnerabilities.
Orthanc at a glance
- Last 12 months
- 12
- Critical · all time
- 4
- Exploited · all time
- 0
- Public exploit · all time
- 0
Show as table
| Month | Vulnerabilities | Critical |
|---|---|---|
| Nov 2026 | 0 | 0 |
| Oct 2026 | 0 | 0 |
| Sep 2026 | 1 | 0 |
| Aug 2026 | 0 | 0 |
| Jul 2026 | 0 | 0 |
| Jun 2026 | 1 | 0 |
| May 2026 | 1 | 0 |
| Apr 2026 | 9 | 3 |
| Mar 2026 | 0 | 0 |
| Feb 2026 | 0 | 0 |
| Jan 2026 | 0 | 0 |
| Dec 2025 | 0 | 0 |
| Nov 2025 | 0 | 0 |
| Oct 2025 | 0 | 0 |
| Sep 2025 | 0 | 0 |
| Aug 2025 | 0 | 0 |
| Jul 2025 | 0 | 0 |
| Jun 2025 | 0 | 0 |
| May 2025 | 0 | 0 |
| Apr 2025 | 0 | 0 |
| Mar 2025 | 0 | 0 |
| Feb 2025 | 1 | 1 |
| Jan 2025 | 0 | 0 |
| Dec 2024 | 0 | 0 |
Products
Latest advisories
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High max 8.1ICSMA-26-253-02 1 CVE
Orthanc DICOM Server
Successful exploitation of this vulnerability could allow an authenticated remote attacker to write past the end of a heap allocation when Orthanc decodes an attacker-supplied PNG or JPEG image, resulting in a crash of the Orthanc process and a denial-of-serv…
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Critical max 9.8ICSMA-25-037-02 1 CVE
Orthanc Server
Successful exploitation of this vulnerability could allow an attacker to disclose sensitive information, modify records, or cause a denial-of-service condition.
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High max 7.1ICSMA-24-023-01 1 CVE
Orthanc Osimis DICOM Web Viewer
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary JavaScript code inside the victim's browser.
14 results · Feed
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High 8.1
Orthanc DICOM Server Integer Overflow or Wraparound
An integer overflow in a specified pitch and buffer-size computation leads to a heap out-of-bounds write when Orthanc DICOM Server decodes an attacker-supplied PNG.
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Low 3.3
Orthanc DICOM Server DCMTK FromDcmtkBridge.cpp read stack-based overflow
A security flaw has been discovered in Orthanc DICOM Server up to 1.12.11. This issue affects the function DcmItem::read of the file OrthancFramework/Sources/DicomParsing/FromDcmtkBridge.cpp of the component DCMTK Parser. Performing a manipulation results in …
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Medium 4.3
Orthanc Explorer 2 URL StudyList.vue cross site scripting
A weakness has been identified in Orthanc Explorer 2 up to 1.12.0. The impacted element is an unknown function of the file WebApplication/src/components/StudyList.vue of the component URL Handler. This manipulation of the argument remote-source causes cross s…
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High 7.5
Memory Exhaustion via Forged ZIP Metadata
A memory exhaustion vulnerability exists in ZIP archive processing. Orthanc automatically extracts ZIP archives uploaded to certain endpoints and trusts metadata fields describing the uncompressed size of archived files. An attacker can craft a small ZIP arch…
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High 7.5
Out-of-Bounds Read in DicomStreamReader
An out-of-bounds read vulnerability exists in `DicomStreamReader` during DICOM meta-header parsing. When processing malformed metadata structures, the parser may read beyond the bounds of the allocated metadata buffer. Although this issue does not typically c…
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High 7.5
Gzip Decompression Bomb via Content-Encoding Header
A gzip decompression bomb vulnerability exists when Orthanc processes HTTP request with `Content-Encoding: gzip`. The server does not enforce limits on decompressed size and allocates memory based on attacker-controlled compression metadata. A specially craft…
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High 7.5
Memory Exhaustion via Unbounded Content-Length
A memory exhaustion vulnerability exists in the HTTP server due to unbounded use of the `Content-Length` header. The server allocates memory directly based on the attacker supplied header value without enforcing an upper limit. A crafted HTTP request containi…
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Critical 9.8
Heap Buffer Overflow in DICOM Image Decoder via VR UL Dimensions
A heap buffer overflow vulnerability exists in the DICOM image decoder. Dimension fields are encoded using Value Representation (VR) Unsigned Long (UL), instead of the expected VR Unsigned Short (US), which allows extremely large dimensions to be processed. T…
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Critical 9.8
Heap Buffer Overflow in DICOM Image Decoder (Palette Color Decode)
A heap buffer overflow vulnerability exists during the decoding of `PALETTE COLOR` DICOM images. Pixel length validation uses 32-bit multiplication for width and height calculations. If these values overflow, the validation check incorrectly succeeds, allowin…
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Critical 9.1
Out-of-Bounds Read in DicomImageDecoder (DecodeLookupTable)
An out-of-bounds read vulnerability exists in the `DecodeLookupTable` function within `DicomImageDecoder.cpp`. The lookup-table decoding logic used for `PALETTE COLOR` images does not validate pixel indices against the lookup table size. Crafted images contai…
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High 7.1
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 ove…
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High 7.1
Out-of-Bounds Read in DicomImageDecoder (PMSCT_RLE1 Decompression)
An out-of-bounds read vulnerability exists in the `DecodePsmctRle1` function of `DicomImageDecoder.cpp`. The `PMSCT_RLE1` decompression routine, which decodes the proprietary Philips Compression format, does not properly validate escape markers placed near th…
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Critical 9.8
Orthanc Server Missing Authentication for Critical Function
Orthanc server prior to version 1.5.8 does not enable basic authentication by default when remote access is enabled. This could result in unauthorized access by an attacker.
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High 7.1
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Orthanc Osimis DICOM Web Viewer
A XSS payload can be uploaded as a DICOM study and when a user tries to view the infected study inside the Osimis WebViewer the XSS vulnerability gets triggered. If exploited, the attacker will be able to execute arbitrary JavaScript code inside the victim's …