{"id":"CVE-2026-45765","state":"PUBLISHED","title":"Suricata dnp3: unbounded reassembly can lead to resource exhaustion","description":"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).","publishedAt":"2026-09-10T21:25:22.867Z","updatedAt":"2026-09-11T17:41:52.667Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["OISF suricata"],"affected":[{"vendor":"OISF","product":"suricata","versions":[{"version":">= 8.0.0, < 8.0.5","status":"affected"},{"version":"< 7.0.16","status":"affected"}]}],"references":["https://github.com/OISF/suricata/security/advisories/GHSA-m8x4-c78g-r4vj","https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315","https://redmine.openinfosecfoundation.org/issues/8460"],"weaknesses":["CWE-400","CWE-770"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45765.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45765","state":"PUBLISHED","datePublished":"2026-09-10T21:25:22.867Z","dateUpdated":"2026-09-11T17:41:52.667Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-13T07:45:21.250Z"},"containers":{"cna":{"title":"Suricata dnp3: unbounded reassembly can lead to resource exhaustion","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":[{"vendor":"OISF","product":"suricata","versions":[{"version":">= 8.0.0, < 8.0.5","status":"affected"},{"version":"< 7.0.16","status":"affected"}]}],"references":[{"url":"https://github.com/OISF/suricata/security/advisories/GHSA-m8x4-c78g-r4vj","name":"https://github.com/OISF/suricata/security/advisories/GHSA-m8x4-c78g-r4vj","tags":["x_refsource_CONFIRM"]},{"url":"https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315","name":"https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315","tags":["x_refsource_MISC"]},{"url":"https://redmine.openinfosecfoundation.org/issues/8460","name":"https://redmine.openinfosecfoundation.org/issues/8460","tags":["x_refsource_MISC"]}],"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","lang":"en","description":"CWE-400: Uncontrolled Resource Consumption","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-770","lang":"en","description":"CWE-770: Allocation of Resources Without Limits or Throttling","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-10T21:25:22.867Z"},"source":{"advisory":"GHSA-m8x4-c78g-r4vj","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-11T17:41:01.835861Z","id":"CVE-2026-45765","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-11T17:41:52.667Z"}}]}}}