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Orthanc DICOM Server Integer Overflow or Wraparound

CVSS 3.1 8.1 HIGHCVSS 4.0 7.2 HIGHCheck source for fixed versionsKEV status unknown

cve-program · CVE-2026-87020

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-87020

Published

DICOM Server

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Orthanc",
                    "product": "DICOM Server",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0",
                            "lessThan": "1.13.0",
                            "versionType": "custom"
                        },
                        {
                            "status": "unaffected",
                            "version": "1.13.0"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 15 Nov 00:38 UTC · 256 of 275 readable · 254 fully read · documentation 469/469 current