CVE-2026-53689

{
  "id": "CVE-2026-53689",
  "sourceIdentifier": "[email protected]",
  "published": "2026-06-10T15:16:42.350",
  "lastModified": "2026-10-26T11:10:00.157",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "libnfs through 6.0.2 before 55c18ea does not validate a string size, leading to an integer overflow during a connection to a crafted NFS server. This occurs in libnfs_zdr_string in lib/libnfs-zdr.c."
    },
    {
      "lang": "es",
      "value": "libnfs en versiones hasta la 6.0.2 antes de 55c18ea no valida el tamaño de una cadena, lo que lleva a un desbordamiento de entero durante una conexión a un servidor NFS manipulado. Esto ocurre en libnfs_zdr_string en lib/libnfs-zdr.c."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "sahlberg",
          "product": "libnfs",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "lessThan": "55c18ea33a83d667f79f0ef209c96895795c729f",
              "versionType": "git",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 5.5
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-06-10T16:01:41.775187Z",
          "id": "CVE-2026-53689",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1284"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/sahlberg/libnfs/commit/55c18ea33a83d667f79f0ef209c96895795c729f",
      "source": "[email protected]"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2026/07/msg00031.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ]
}