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TI-2026-04764 Aliases CVE-2026-5441GHSA-5jvx-5q86-rxx3

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

Priority LOW 30CWE-125Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00138 3rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OrthancDICOM Serverup to 1.12.10—No fix listedCNA
  • DICOM Server VendorOrthanc Affected up to 1.12.10 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:orthanc-server:orthanc:*:*:*:*:*:*:*:*before 1.12.11VulnerableOrthanc
  • cpe:2.3:a:orthanc-server:orthanc:*:*:*:*:*:*:*:* Versions before 1.12.11 Vulnerable ·Orthanc

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-5441
  2. 2026-10-03 Alias added: GHSA-5jvx-5q86-rxx3

References

Advisory 1

Other 2

  • TI-2025-00759 Orthanc Server Missing Authentication for Critical Function CVSS 4.0CRITICAL 9.2
  • TI-2026-04766 Heap Buffer Overflow in DICOM Image Decoder (Palette Color Decode) CVSS 3.1CRITICAL 9.8
  • TI-2026-04765 Heap Buffer Overflow in DICOM Image Decoder via VR UL Dimensions CVSS 3.1CRITICAL 9.8
  • TI-2023-16538 Orthanc before 1.12.0 allows authenticated users with access to the Orthanc API to… CVSS 3.1HIGH 8.8
  • TI-2026-04768 Out-of-Bounds Read in DicomImageDecoder (DecodeLookupTable) CVSS 3.1CRITICAL 9.1
  • TI-2026-04763 Memory Exhaustion via Unbounded Content-Length CVSS 3.1HIGH 7.5
See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences