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CVE-2026-5441

Out-of-Bounds Read in DicomImageDecoder (PMSCT_RLE1 Decompression)

7.1 HighFix available

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 the end of the compressed data stream. A crafted sequence at the end of the buffer can cause the decoder to read beyond the allocated memory region and leak heap data into the rendered image output.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
High

Exploit likelihood

0.14%Up 0.1 points since Apr 10, 2026
90%50%10%1%

What each source reports

CVE List Score used 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 the end of the compressed data stream. A crafted sequence at the end of the buffer can cause the decoder to read beyond the allocated memory region and leak heap data into the rendered image output.

Record
CVE-2026-5441
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Updated
2026-11-02
EUVDEUVD-2026-20918 7.1

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 the end of the compressed data stream. A crafted sequence at the end of the buffer can cause the decoder to read beyond the allocated memory region and leak heap data into the rendered image output.

Record
EUVD-2026-20918
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-5jvx-5q86-rxx3 7.1

An out-of-bounds read vulnerability exists in the `DecodePsmctRle1` function of ...

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 the end of the compressed data stream. A crafted sequence at the end of the buffer can cause the decoder to read beyond the allocated memory region and leak heap data into the rendered image output.

Record
GHSA-5jvx-5q86-rxx3
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Weakness
CWE-125
Updated
2026-11-02
NVD 7.1

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 the end of the compressed data stream. A crafted sequence at the end of the buffer can cause the decoder to read beyond the allocated memory region and leak heap data into the rendered image output.

Record
CVE-2026-5441
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Weakness
CWE-125
Updated
2026-11-02
OSVDEBIAN-CVE-2026-5441 7.1

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 the end of the compressed data stream. A crafted sequence at the end of the buffer can cause the decoder to read beyond the allocated memory region and leak heap data into the rendered image output.

Record
DEBIAN-CVE-2026-5441
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2026-5441 7.1

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 the end of the compressed data stream. A crafted sequence at the end of the buffer can cause the decoder to read beyond the allocated memory region and leak heap data into the rendered image output.

Record
UBUNTU-CVE-2026-5441
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
orthanc
Debian:12
All versions, plus listed versions
1.10.1+dfsg-21.10.1+dfsg-2+deb12u11.12.1+dfsg-11.12.1+dfsg-21.12.1+dfsg-3
Show 31 moreShow less
1.12.1+dfsg-41.12.10+dfsg-11.12.10+dfsg-21.12.10+dfsg-31.12.10+dfsg-41.12.10+dfsg-51.12.11+dfsg-11.12.11+dfsg-21.12.11+dfsg-31.12.11+dfsg-41.12.11+dfsg-51.12.11+dfsg-61.12.11+dfsg-71.12.11+dfsg-81.12.2+dfsg-11.12.3+dfsg-11.12.3+dfsg-21.12.4+dfsg-11.12.4+dfsg-21.12.4+dfsg-31.12.4+dfsg-41.12.5+dfsg-11.12.5+dfsg-21.12.6+dfsg-11.12.7+dfsg-11.12.7+dfsg-21.12.7+dfsg-31.12.7+dfsg-41.12.9+dfsg-11.12.9+dfsg-21.13.0+dfsg-1
None known
orthanc
Debian:13
All versions, plus listed versions
1.12.10+dfsg-11.12.10+dfsg-21.12.10+dfsg-31.12.10+dfsg-41.12.10+dfsg-5
Show 12 moreShow less
1.12.11+dfsg-11.12.11+dfsg-21.12.11+dfsg-31.12.11+dfsg-41.12.11+dfsg-51.12.11+dfsg-61.12.11+dfsg-71.12.11+dfsg-81.12.7+dfsg-41.12.9+dfsg-11.12.9+dfsg-21.13.0+dfsg-1
None known
orthanc
Debian:14
before 1.12.10+dfsg-4, plus listed versions
1.12.10+dfsg-11.12.10+dfsg-21.12.10+dfsg-31.12.7+dfsg-41.12.9+dfsg-11.12.9+dfsg-2
1.12.10+dfsg-4
orthanc
Ubuntu:16.04:LTS
All versions, plus listed versions
0.9.4+dfsg-10.9.4+dfsg-20.9.5+dfsg-11.0.0+dfsg-11.0.0+dfsg-1build1
None known
orthanc
Ubuntu:18.04:LTS
All versions, plus listed versions
1.3.0+dfsg-1build11.3.0+dfsg-1build21.3.1+dfsg-11.3.1+dfsg-1build11.3.1+dfsg-1build2
None known
orthanc
Ubuntu:20.04:LTS
All versions, plus listed versions
1.5.7+dfsg-21.5.8+dfsg-21.5.8+dfsg-2ubuntu21.5.8+dfsg-2ubuntu31.5.8+dfsg-2ubuntu41.5.8+dfsg-2ubuntu51.5.8+dfsg-2ubuntu6
None known
orthanc
Ubuntu:22.04:LTS
All versions, plus listed versions
1.9.2+really1.9.1+dfsg-11.9.7+dfsg-3ubuntu11.9.7+dfsg-3ubuntu21.9.7+dfsg-41.9.7+dfsg-51.9.7+dfsg-61.10.0+dfsg-1
None known
orthanc
Ubuntu:24.04:LTS
All versions, plus listed versions
1.12.1+dfsg-31.12.1+dfsg-41.12.1+dfsg-4build11.12.2+dfsg-11.12.2+dfsg-1build31.12.2+dfsg-1build4
None known
orthanc
Ubuntu:25.10
All versions, plus listed versions
1.12.6+dfsg-11.12.7+dfsg-41.12.7+dfsg-4build2
None known
orthanc
Ubuntu:26.10
All versions, plus listed versions
1.12.10+dfsg-21.12.11+dfsg-81.12.11+dfsg-8build1
None known
orthanc
Ubuntu:26.04:LTS
All versions, plus listed versions
1.12.7+dfsg-4build21.12.9+dfsg-21.12.10+dfsg-11.12.10+dfsg-1build11.12.10+dfsg-2
None known

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-5441 is a high vulnerability (CVSS 7.1) in Orthanc Dicom Server, published April 9, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.14%, the 3rd percentile. Fixed in orthanc 1.12.10+dfsg-4.

References

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