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TI-2026-59438 Aliases CVE-2026-87020GHSA-x3f6-h73j-r3cw

Orthanc DICOM Server Integer Overflow or Wraparound

Priority LOW 32CWE-190Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0056 46th percentileScored 2026-11-07
Fix Fixed DICOM Server (Orthanc): 1.13.0

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 Serverbefore 1.13.01.13.0Patch availableCNA
  • DICOM Server VendorOrthanc Affected before 1.13.0 Fixed in 1.13.0 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:orthanc-server:orthanc:*:*:*:*:*:*:*:*——Orthanc
  • cpe:2.3:a:orthanc-server:orthanc:*:*:*:*:*:*:*:* Versions — — ·Orthanc

Remediation

  • Fix · CNA DICOM Server (Orthanc) Fixed in 1.13.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-87020
  2. 2026-10-03 Alias added: GHSA-x3f6-h73j-r3cw

References

Other 3

  • TI-2026-08911 Orthanc Explorer 2 URL StudyList.vue cross site scripting CVSS 4.0MEDIUM 5.3
  • TI-2026-09055 Orthanc DICOM Server DCMTK FromDcmtkBridge.cpp read stack-based overflow CVSS 4.0MEDIUM 4.8
  • 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
See all 16 →

Sources

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