Routinator may exit on malformed ranges

{
  "id": "c6b0890bd54b9c7f6043d80639f43c3a7b95e76d6821adfad8c5ddb8c95322cd",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-72758",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Routinator may exit on malformed ranges",
    "summary": "When parsing an AS range in Routinator, if the maximum value of the range is smaller than the minimum value of the range, Routinator will never reach the maximum value and run out of memory.",
    "evidence": "cve:CVE-2026-72758",
    "products": [
      {
        "name": {
          "value": "Routinator",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-72758",
      "aliases": [
        "CVE-2026-72758"
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      "metrics": [
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          "format": "CVSS",
          "cvssV3_1": {
            "version": "3.1",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "affected": [
        {
          "vendor": "NLnet Labs",
          "product": "Routinator",
          "versions": [
            {
              "status": "unaffected",
              "version": "0.15.3",
              "lessThan": "*",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "affected"
        }
      ],
      "modified": "2026-10-26T17:57:33.250Z",
      "provider": "cve",
      "references": [
        "https://www.nlnetlabs.nl/downloads/routinator/CVE-2026-72756.txt"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
              {
                "other": {
                  "type": "ssvc",
                  "content": {
                    "id": "CVE-2026-72758",
                    "role": "CISA Coordinator",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "version": "2.0.3",
                    "timestamp": "2026-10-26T17:46:28.407742Z"
                  }
                }
              }
            ],
            "providerMetadata": {
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP",
              "dateUpdated": "2026-10-26T17:57:33.250Z"
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        "cna": {
          "orgId": "206fc3a0-e175-490b-9eaa-a5738056c9f6",
          "shortName": "NLnet Labs",
          "dateUpdated": "2026-10-26T17:07:14.740Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-72758",
        "evidence": "/cveMetadata/cveId"
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    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 329082,
  "published_at": "2026-10-26T17:07:14.74+00:00"
}