Vulnerability-Lookup

CVE-2026-116744 (GCVE-0-2026-116744)

Vulnerability from cvelistv5 – Published: 2026-10-26 21:52 – Updated: 2026-10-31 02:01

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.

Severity

6.9 (Medium)


                        
                          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

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-31 02:01 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 7402 records in the last 180 days details

References

7 references

URL	Tags
https://github.com/ntop/nDPI/pull/3298	issue-trackingpatch
https://github.com/ntop/nDPI/commit/ca9d819151606…	patch
https://github.com/ntop/nDPI	product
https://github.com/ntop/nDPI/blob/6.0/src/lib/pro…	technical-description
https://hackmd.io/@haindpwn/ndpi-softether-host-f…	third-party-advisory
https://github.com/ntop/nDPI/issues/3291	issue-tracking
https://www.vulncheck.com/advisories/ntop-ndpi-th…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
ntop	nDPI	Affected: 0 , ≤ 6.0 (custom) cpe:2.3:a:ntop:ndpi::::::::

Date Public

2026-10-26 00:00

Credits

HaiND from the Post and Telecommunication Institute of Technology IvanNardi

Show details on NVD website

JSON

To clipboard

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}

FKIE_CVE-2026-116744

Vulnerability from fkie_nvd - Published: 2026-10-26 22:16 - Updated: 2026-10-31 03:17

Severity

5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Summary

References

	URL	Tags
	disclosure@vulncheck.com	https://github.com/ntop/nDPI
	disclosure@vulncheck.com	https://github.com/ntop/nDPI/blob/6.0/src/lib/protocols/softether.c#L203
	disclosure@vulncheck.com	https://github.com/ntop/nDPI/commit/ca9d819151606377ac53305583fe819748c69be2
	disclosure@vulncheck.com	https://github.com/ntop/nDPI/issues/3291
	disclosure@vulncheck.com	https://github.com/ntop/nDPI/pull/3298
	disclosure@vulncheck.com	https://hackmd.io/@haindpwn/ndpi-softether-host-fqdn-strncmp-oob-read
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/ntop-ndpi-through-6.0-out-of-bounds-read-in-softether-dissector

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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    {
      "lang": "en",
      "value": "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."
    }
  ],
  "id": "CVE-2026-116744",
  "lastModified": "2026-10-31T03:17:16.893",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "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:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 6.9,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "LOW",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-116744",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-10-31T02:01:44.690073Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-10-26T22:16:58.963",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/ntop/nDPI"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/ntop/nDPI/blob/6.0/src/lib/protocols/softether.c#L203"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/ntop/nDPI/commit/ca9d819151606377ac53305583fe819748c69be2"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/ntop/nDPI/issues/3291"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/ntop/nDPI/pull/3298"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://hackmd.io/@haindpwn/ndpi-softether-host-fqdn-strncmp-oob-read"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://www.vulncheck.com/advisories/ntop-ndpi-through-6.0-out-of-bounds-read-in-softether-dissector"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}

GHSA-GPG3-522V-2FRF

Vulnerability from github – Published: 2026-10-27 00:32 – Updated: 2026-10-27 00:32

Details

Severity

5.3 (Medium)


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

6.9 (Medium)


                  
                    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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-116744"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-26T22:16:58Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-gpg3-522v-2frf",
  "modified": "2026-10-27T00:32:49Z",
  "published": "2026-10-27T00:32:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-116744"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ntop/nDPI/issues/3291"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ntop/nDPI/pull/3298"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ntop/nDPI/commit/ca9d819151606377ac53305583fe819748c69be2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ntop/nDPI"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ntop/nDPI/blob/6.0/src/lib/protocols/softether.c#L203"
    },
    {
      "type": "WEB",
      "url": "https://hackmd.io/@haindpwn/ndpi-softether-host-fqdn-strncmp-oob-read"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/ntop-ndpi-through-6.0-out-of-bounds-read-in-softether-dissector"
    }
  ],
  "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:L",
      "type": "CVSS_V3"
    },
    {
      "score": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

UBUNTU-CVE-2026-116744 (CVE-2026-116744)

Vulnerability from osv_ubuntu – Published: 2026-10-26 22:16 – Updated: 2026-10-28 17:50 – Source website

Details

Severity

5.3 (Medium)


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

5.3 (Medium)


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

6.9 (Medium)


                    
                      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

6.9 (Medium)


                    
                      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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-116744	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-116744	REPORT
	https://github.com/ntop/ndpi	REPORT
	https://github.com/cveproject/cvelistv5/tree/main…	REPORT
	https://github.com/ntop/ndpi/blob/6.0/src/lib/pro…	REPORT
	https://github.com/ntop/ndpi/commit/ca9d819151606…	REPORT
	https://github.com/ntop/ndpi/issues/3291	REPORT
	https://github.com/ntop/ndpi/pull/3298	REPORT
	https://hackmd.io/@haindpwn/ndpi-softether-host-f…	REPORT
	https://nvd.nist.gov/vuln/detail/cve-2026-116744	REPORT
	https://www.vulncheck.com/advisories/ntop-ndpi-th…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libndpi-bin",
            "binary_version": "1.7.1~git20151130.6f3d5a7-1"
          },
          {
            "binary_name": "libndpi3",
            "binary_version": "1.7.1~git20151130.6f3d5a7-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "ndpi",
        "purl": "pkg:deb/ubuntu/ndpi@1.7.1~git20151130.6f3d5a7-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.5.0-1",
        "1.6-1",
        "1.7.1~git20151130.6f3d5a7-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libndpi-bin",
            "binary_version": "2.2-1"
          },
          {
            "binary_name": "libndpi-wireshark",
            "binary_version": "2.2-1"
          },
          {
            "binary_name": "libndpi5",
            "binary_version": "2.2-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "ndpi",
        "purl": "pkg:deb/ubuntu/ndpi@2.2-1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.8-1",
        "2.2-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libndpi-bin",
            "binary_version": "2.6-5"
          },
          {
            "binary_name": "libndpi-wireshark",
            "binary_version": "2.6-5"
          },
          {
            "binary_name": "libndpi2.6",
            "binary_version": "2.6-5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "ndpi",
        "purl": "pkg:deb/ubuntu/ndpi@2.6-5?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.6-4",
        "2.6-5"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libndpi-bin",
            "binary_version": "4.2-2"
          },
          {
            "binary_name": "libndpi-wireshark",
            "binary_version": "4.2-2"
          },
          {
            "binary_name": "libndpi4.2",
            "binary_version": "4.2-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "ndpi",
        "purl": "pkg:deb/ubuntu/ndpi@4.2-2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.0-4",
        "4.2-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libndpi-bin",
            "binary_version": "4.2-2.1build1"
          },
          {
            "binary_name": "libndpi-wireshark",
            "binary_version": "4.2-2.1build1"
          },
          {
            "binary_name": "libndpi4.2t64",
            "binary_version": "4.2-2.1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "ndpi",
        "purl": "pkg:deb/ubuntu/ndpi@4.2-2.1build1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.2-2",
        "4.2-2.1",
        "4.2-2.1build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libndpi-bin",
            "binary_version": "4.2-2.1build2"
          },
          {
            "binary_name": "libndpi-wireshark",
            "binary_version": "4.2-2.1build2"
          },
          {
            "binary_name": "libndpi4.2t64",
            "binary_version": "4.2-2.1build2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.10",
        "name": "ndpi",
        "purl": "pkg:deb/ubuntu/ndpi@4.2-2.1build2?arch=source\u0026distro=stonking"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.2-2.1build2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libndpi-bin",
            "binary_version": "4.2-2.1build2"
          },
          {
            "binary_name": "libndpi-wireshark",
            "binary_version": "4.2-2.1build2"
          },
          {
            "binary_name": "libndpi4.2t64",
            "binary_version": "4.2-2.1build2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "ndpi",
        "purl": "pkg:deb/ubuntu/ndpi@4.2-2.1build2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.2-2.1build1",
        "4.2-2.1build2"
      ]
    }
  ],
  "aliases": [],
  "details": "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.",
  "id": "UBUNTU-CVE-2026-116744",
  "modified": "2026-10-28T17:50:38Z",
  "published": "2026-10-26T22:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-116744"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-116744"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/ntop/ndpi"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/cveproject/cvelistv5/tree/main/cves/2026/116xxx/cve-2026-116744.json"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/ntop/ndpi/blob/6.0/src/lib/protocols/softether.c#l203"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/ntop/ndpi/commit/ca9d819151606377ac53305583fe819748c69be2"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/ntop/ndpi/issues/3291"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/ntop/ndpi/pull/3298"
    },
    {
      "type": "REPORT",
      "url": "https://hackmd.io/@haindpwn/ndpi-softether-host-fqdn-strncmp-oob-read"
    },
    {
      "type": "REPORT",
      "url": "https://nvd.nist.gov/vuln/detail/cve-2026-116744"
    },
    {
      "type": "REPORT",
      "url": "https://www.vulncheck.com/advisories/ntop-ndpi-through-6.0-out-of-bounds-read-in-softether-dissector"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "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",
      "type": "CVSS_V4"
    },
    {
      "score": "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",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-116744"
  ]
}

Sightings

Author	Source	Type	Date	Other

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-116744 (GCVE-0-2026-116744)

FKIE_CVE-2026-116744

GHSA-GPG3-522V-2FRF

UBUNTU-CVE-2026-116744 (CVE-2026-116744)

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour