CVE-2026-5445 (GCVE-0-2026-5445)

Vulnerability from cvelistv5 – Published: 2026-04-09 14:42 – Updated: 2026-04-09 14:42
VLAI?
Title
Out-of-Bounds Read in DicomImageDecoder (DecodeLookupTable)
Summary
An out-of-bounds read vulnerability exists in the `DecodeLookupTable` function within `DicomImageDecoder.cpp`. The lookup-table decoding logic used for `PALETTE COLOR` images does not validate pixel indices against the lookup table size. Crafted images containing indices larger than the palette size cause the decoder to read beyond allocated lookup table memory and expose heap contents in the output image.
Severity ?
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
Orthanc DICOM Server Affected: 0 , ≤ 1.12.10 (custom)
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Show details on NVD website

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  "containers": {
    "cna": {
      "affected": [
        {
          "product": "DICOM Server",
          "vendor": "Orthanc",
          "versions": [
            {
              "lessThanOrEqual": "1.12.10",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An out-of-bounds read vulnerability exists in the `DecodeLookupTable` function within `DicomImageDecoder.cpp`. The lookup-table decoding logic used for `PALETTE COLOR` images does not validate pixel indices against the lookup table size. Crafted images containing indices larger than the palette size cause the decoder to read beyond allocated lookup table memory and expose heap contents in the output image."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-125 Out-of-bounds Read",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-09T14:42:51.673Z",
        "orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
        "shortName": "certcc"
      },
      "references": [
        {
          "url": "https://www.orthanc-server.com/"
        },
        {
          "url": "https://www.machinespirits.de/"
        },
        {
          "url": "https://kb.cert.org/vuls/id/536588"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Out-of-Bounds Read in DicomImageDecoder (DecodeLookupTable)",
      "x_generator": {
        "engine": "VINCE 3.0.35",
        "env": "prod",
        "origin": "https://cveawg.mitre.org/api/cve/CVE-2026-5445"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b",
    "assignerShortName": "certcc",
    "cveId": "CVE-2026-5445",
    "datePublished": "2026-04-09T14:42:51.673Z",
    "dateReserved": "2026-04-02T19:23:30.637Z",
    "dateUpdated": "2026-04-09T14:42:51.673Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-5445",
      "date": "2026-04-13",
      "epss": "0.00017",
      "percentile": "0.03923"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-5445\",\"sourceIdentifier\":\"cret@cert.org\",\"published\":\"2026-04-09T15:16:16.863\",\"lastModified\":\"2026-04-13T15:02:47.353\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"An out-of-bounds read vulnerability exists in the `DecodeLookupTable` function within `DicomImageDecoder.cpp`. The lookup-table decoding logic used for `PALETTE COLOR` images does not validate pixel indices against the lookup table size. Crafted images containing indices larger than the palette size cause the decoder to read beyond allocated lookup table memory and expose heap contents in the output image.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://kb.cert.org/vuls/id/536588\",\"source\":\"cret@cert.org\"},{\"url\":\"https://www.machinespirits.de/\",\"source\":\"cret@cert.org\"},{\"url\":\"https://www.orthanc-server.com/\",\"source\":\"cret@cert.org\"}]}}"
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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