Heap Buffer Overflow in DICOM Image Decoder (Palette Color Decode)_CVE-2026-5443

{
    "lastseen": "",
    "description": "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, allowing the decoder to read and write to memory beyond allocated buffers.",
    "published": "2026-04-09T14:43:15.227Z",
    "modified": "2026-04-14T16:34:45.930Z",
    "type": "cve",
    "title": "Heap Buffer Overflow in DICOM Image Decoder (Palette Color Decode)",
    "source": "certcc",
    "references": "https://www.orthanc-server.com/\nhttps://www.machinespirits.de/\nhttps://kb.cert.org/vuls/id/536588",
    "id": "CVE-2026-5443",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Orthanc DICOM Server 0",
    "sourceHref": "",
    "cvss": {
        "score": 9.8,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "DICOM Server",
    "version": "0",
    "vendor": "Orthanc",
    "ai_description": "Heap buffer overflow in DICOM image decoder due to incorrect pixel length validation",
    "ai_severity": "Critical",
    "ai_vendor": "Orthanc",
    "ai_product": "DICOM Server",
    "ai_version": "0",
    "ai_score": 9.8
}