Vulnerability-Lookup

GHSA-GQWR-8HWP-HH46

Vulnerability from github – Published: 2026-04-09 15:35 – Updated: 2026-04-14 18:30

Details

An out-of-bounds read vulnerability exists in DicomStreamReader during DICOM meta-header parsing. When processing malformed metadata structures, the parser may read beyond the bounds of the allocated metadata buffer. Although this issue does not typically crash the server or expose data directly to the attacker, it reflects insufficient input validation in the parsing logic.

Severity ?

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-5437"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-09T15:16:15Z",
    "severity": "HIGH"
  },
  "details": "An out-of-bounds read vulnerability exists in `DicomStreamReader` during DICOM meta-header parsing. When processing malformed metadata structures, the parser may read beyond the bounds of the allocated metadata buffer. Although this issue does not typically crash the server or expose data directly to the attacker, it reflects insufficient input validation in the parsing logic.",
  "id": "GHSA-gqwr-8hwp-hh46",
  "modified": "2026-04-14T18:30:31Z",
  "published": "2026-04-09T15:35:08Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5437"
    },
    {
      "type": "WEB",
      "url": "https://kb.cert.org/vuls/id/536588"
    },
    {
      "type": "WEB",
      "url": "https://www.machinespirits.de"
    },
    {
      "type": "WEB",
      "url": "https://www.orthanc-server.com"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-5437 (GCVE-0-2026-5437)

Vulnerability from cvelistv5 – Published: 2026-04-09 14:44 – Updated: 2026-04-14 16:34

Title

Out-of-Bounds Read in DicomStreamReader

Summary

An out-of-bounds read vulnerability exists in `DicomStreamReader` during DICOM meta-header parsing. When processing malformed metadata structures, the parser may read beyond the bounds of the allocated metadata buffer. Although this issue does not typically crash the server or expose data directly to the attacker, it reflects insufficient input validation in the parsing logic.

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-125 Out-of-bounds Read

Assigner

certcc

References

URL

Tags

	https://www.orthanc-server.com/
	https://www.machinespirits.de/
	https://kb.cert.org/vuls/id/536588

Impacted products

	Vendor	Product	Version
	Orthanc	DICOM Server	Affected: 0 , ≤ 1.12.10 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-5437",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-14T15:14:39.947635Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-14T16:34:20.487Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "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 `DicomStreamReader` during DICOM meta-header parsing. When processing malformed metadata structures, the parser may read beyond the bounds of the allocated metadata buffer. Although this issue does not typically crash the server or expose data directly to the attacker, it reflects insufficient input validation in the parsing logic."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-125 Out-of-bounds Read",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-09T14:44:17.972Z",
        "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 DicomStreamReader",
      "x_generator": {
        "engine": "VINCE 3.0.35",
        "env": "prod",
        "origin": "https://cveawg.mitre.org/api/cve/CVE-2026-5437"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b",
    "assignerShortName": "certcc",
    "cveId": "CVE-2026-5437",
    "datePublished": "2026-04-09T14:44:17.972Z",
    "dateReserved": "2026-04-02T19:21:45.325Z",
    "dateUpdated": "2026-04-14T16:34:20.487Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-GQWR-8HWP-HH46

CVE-2026-5437 (GCVE-0-2026-5437)

Tags

Sightings

Nomenclature