Vulnerability-Lookup

CVE-2026-45765 (GCVE-0-2026-45765)

Vulnerability from cvelistv5 – Published: 2026-09-10 21:25 – Updated: 2026-09-11 17:41

Title

Suricata dnp3: unbounded reassembly can lead to resource exhaustion

Summary

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, DNP3 reassembly could buffer data without sufficient parser-level bounds. Crafted DNP3 traffic may cause Suricata to consume excessive memory, potentially resulting in denial of service. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, disable DNP3 (which is not enabled by default) if it is not needed, and/or define a limited `stream.reassembly.depth` (0 or absent is unlimited).

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-11 17:41 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption
CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/OISF/suricata/security/advisor…	x_refsource_CONFIRM
https://forum.suricata.io/t/suricata-8-0-5-and-7-…	x_refsource_MISC
https://redmine.openinfosecfoundation.org/issues/8460	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
OISF	suricata	Affected: >= 8.0.0, < 8.0.5 Affected: < 7.0.16	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-45765",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-11T17:41:01.835861Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-11T17:41:52.667Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "suricata",
          "vendor": "OISF",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 8.0.0, \u003c 8.0.5"
            },
            {
              "status": "affected",
              "version": "\u003c 7.0.16"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, DNP3 reassembly could buffer data without sufficient parser-level bounds. Crafted DNP3 traffic may cause Suricata to consume excessive memory, potentially resulting in denial of service. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, disable DNP3 (which is not enabled by default) if it is not needed, and/or define a limited `stream.reassembly.depth` (0 or absent is unlimited)."
        }
      ],
      "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-400",
              "description": "CWE-400: Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-10T21:25:22.867Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/OISF/suricata/security/advisories/GHSA-m8x4-c78g-r4vj",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/OISF/suricata/security/advisories/GHSA-m8x4-c78g-r4vj"
        },
        {
          "name": "https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315"
        },
        {
          "name": "https://redmine.openinfosecfoundation.org/issues/8460",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://redmine.openinfosecfoundation.org/issues/8460"
        }
      ],
      "source": {
        "advisory": "GHSA-m8x4-c78g-r4vj",
        "discovery": "UNKNOWN"
      },
      "title": "Suricata dnp3: unbounded reassembly can lead to resource exhaustion"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-45765",
    "datePublished": "2026-09-10T21:25:22.867Z",
    "dateReserved": "2026-05-13T07:45:21.250Z",
    "dateUpdated": "2026-09-11T17:41:52.667Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-45765",
      "date": "2026-09-11",
      "epss": "0.00432",
      "percentile": "0.3642"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-45765\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-09-10T22:16:56.397\",\"lastModified\":\"2026-09-10T22:16:56.397\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, DNP3 reassembly could buffer data without sufficient parser-level bounds. Crafted DNP3 traffic may cause Suricata to consume excessive memory, potentially resulting in denial of service. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, disable DNP3 (which is not enabled by default) if it is not needed, and/or define a limited `stream.reassembly.depth` (0 or absent is unlimited).\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"OISF\",\"product\":\"suricata\",\"versions\":[{\"version\":\"\u003e= 8.0.0, \u003c 8.0.5\",\"status\":\"affected\"},{\"version\":\"\u003c 7.0.16\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-400\"},{\"lang\":\"en\",\"value\":\"CWE-770\"}]}],\"references\":[{\"url\":\"https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/OISF/suricata/security/advisories/GHSA-m8x4-c78g-r4vj\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://redmine.openinfosecfoundation.org/issues/8460\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}

CERTFR-2026-AVI-0614

Vulnerability from certfr_avis - Published: 2026-05-20 - Updated: 2026-05-20

De multiples vulnérabilités ont été découvertes dans Suricata. Elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service à distance et un problème de sécurité non spécifié par l'éditeur.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

	Vendor	Product	Description
	Suricata	Suricata	Suricata versions 8.x antérieures à 8.0.5
	Suricata	Suricata	Suricata versions antérieures à 7.0.16

References

Title

Publication Time

Tags

Bulletin de sécurité Suricata suricata-8-0-5-and-7-0-16-released

2026-05-19

vendor-advisory

Show details on source website

JSON

To clipboard

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Suricata versions 8.x ant\u00e9rieures \u00e0 8.0.5",
      "product": {
        "name": "Suricata",
        "vendor": {
          "name": "Suricata",
          "scada": false
        }
      }
    },
    {
      "description": "Suricata versions ant\u00e9rieures \u00e0 7.0.16",
      "product": {
        "name": "Suricata",
        "vendor": {
          "name": "Suricata",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": "",
  "content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
  "cves": [
    {
      "name": "CVE-2026-45759",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45759"
    },
    {
      "name": "CVE-2026-45747",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45747"
    },
    {
      "name": "CVE-2026-45770",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45770"
    },
    {
      "name": "CVE-2026-45769",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45769"
    },
    {
      "name": "CVE-2026-45764",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45764"
    },
    {
      "name": "CVE-2026-45766",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45766"
    },
    {
      "name": "CVE-2026-45765",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45765"
    },
    {
      "name": "CVE-2026-46352",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46352"
    },
    {
      "name": "CVE-2026-45767",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45767"
    },
    {
      "name": "CVE-2026-45752",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45752"
    },
    {
      "name": "CVE-2026-45751",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45751"
    },
    {
      "name": "CVE-2026-45763",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45763"
    },
    {
      "name": "CVE-2026-46387",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46387"
    },
    {
      "name": "CVE-2026-45768",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45768"
    },
    {
      "name": "CVE-2026-45761",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45761"
    },
    {
      "name": "CVE-2026-45762",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45762"
    }
  ],
  "initial_release_date": "2026-05-20T00:00:00",
  "last_revision_date": "2026-05-20T00:00:00",
  "links": [],
  "reference": "CERTFR-2026-AVI-0614",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2026-05-20T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "D\u00e9ni de service \u00e0 distance"
    },
    {
      "description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
    },
    {
      "description": "Non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Suricata. Elles permettent \u00e0 un attaquant de provoquer une ex\u00e9cution de code arbitraire \u00e0 distance, un d\u00e9ni de service \u00e0 distance et un probl\u00e8me de s\u00e9curit\u00e9 non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur.",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans Suricata",
  "vendor_advisories": [
    {
      "published_at": "2026-05-19",
      "title": "Bulletin de s\u00e9curit\u00e9 Suricata suricata-8-0-5-and-7-0-16-released",
      "url": "https://suricata.io/2026/05/19/suricata-8-0-5-and-7-0-16-released/"
    }
  ]
}

FKIE_CVE-2026-45765

Vulnerability from fkie_nvd - Published: 2026-09-10 22:16 - Updated: 2026-09-10 22:16

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315
	security-advisories@github.com	https://github.com/OISF/suricata/security/advisories/GHSA-m8x4-c78g-r4vj
	security-advisories@github.com	https://redmine.openinfosecfoundation.org/issues/8460

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "suricata",
          "vendor": "OISF",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 8.0.0, \u003c 8.0.5"
            },
            {
              "status": "affected",
              "version": "\u003c 7.0.16"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, DNP3 reassembly could buffer data without sufficient parser-level bounds. Crafted DNP3 traffic may cause Suricata to consume excessive memory, potentially resulting in denial of service. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, disable DNP3 (which is not enabled by default) if it is not needed, and/or define a limited `stream.reassembly.depth` (0 or absent is unlimited)."
    }
  ],
  "id": "CVE-2026-45765",
  "lastModified": "2026-09-10T22:16:56.397",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-09-10T22:16:56.397",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/OISF/suricata/security/advisories/GHSA-m8x4-c78g-r4vj"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://redmine.openinfosecfoundation.org/issues/8460"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        },
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}

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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

CVE-2026-45765 (GCVE-0-2026-45765)

CERTFR-2026-AVI-0614

Solutions

FKIE_CVE-2026-45765

Tags

Sightings

Nomenclature