ntop nDPI through 6.0 Out-of-Bounds Read in SoftEther Dissector

{
  "id": "5111e0f01ed8a6b61b63a911d4ce7bb227acd51bbf629257c7ee9868148225dc",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-116744",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ntop nDPI through 6.0 Out-of-Bounds Read in SoftEther Dissector",
    "summary": "ntop nDPI through 6.0 contains an out-of-bounds read vulnerability in dissect_softether_host_fqdn() in softether.c that compares host_name using the consumed byte count instead of data length. Remote attackers can send crafted short UDP datagrams on already-classified SoftEther flows, causing strncmp to read beyond the packet payload buffer.",
    "evidence": "cve:CVE-2026-116744",
    "products": [
      {
        "name": {
          "value": "nDPI",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-116744",
      "aliases": [
        "CVE-2026-116744"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV4_0": {
            "version": "4.0",
            "baseScore": 6.9,
            "attackVector": "NETWORK",
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "privilegesRequired": "NONE",
            "subIntegrityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "subAvailabilityImpact": "NONE",
            "vulnAvailabilityImpact": "LOW",
            "subConfidentialityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE"
          }
        },
        {
          "format": "CVSS",
          "cvssV3_1": {
            "scope": "UNCHANGED",
            "version": "3.1",
            "baseScore": 5.3,
            "attackVector": "NETWORK",
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "integrityImpact": "NONE",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "availabilityImpact": "LOW",
            "privilegesRequired": "NONE",
            "confidentialityImpact": "NONE"
          }
        }
      ],
      "affected": [
        {
          "repo": "https://github.com/ntop/nDPI",
          "vendor": "ntop",
          "product": "nDPI",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "versionType": "custom",
              "lessThanOrEqual": "6.0"
            }
          ],
          "packageURL": "pkg:github/ntop/ndpi",
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-26T21:52:42.875Z",
      "provider": "cve",
      "references": [
        "https://github.com/ntop/nDPI/pull/3298",
        "https://github.com/ntop/nDPI/commit/ca9d819151606377ac53305583fe819748c69be2",
        "https://github.com/ntop/nDPI",
        "https://github.com/ntop/nDPI/blob/6.0/src/lib/protocols/softether.c#L203",
        "https://hackmd.io/@haindpwn/ndpi-softether-host-fqdn-strncmp-oob-read",
        "https://github.com/ntop/nDPI/issues/3291",
        "https://www.vulncheck.com/advisories/ntop-ndpi-through-6.0-out-of-bounds-read-in-softether-dissector"
      ],
      "provider_metadata": {
        "cna": {
          "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
          "shortName": "VulnCheck",
          "dateUpdated": "2026-10-26T21:52:42.875Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-116744",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 353940,
  "published_at": "2026-10-26T21:52:42.875+00:00"
}