CVE-2026-76489

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-76489", "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "state": "PUBLISHED", "assignerShortName": "cisco", "dateReserved": "2026-08-19T12:02:03.640Z", "datePublished": "2026-10-21T16:17:23.396Z", "dateUpdated": "2026-10-22T19:11:31.788Z"}, "containers": {"cna": {"title": "Multiple Cisco Products Snort 3 Generic File Processing Memory Exhaustion Denial of Service Vulnerability", "metrics": [{"format": "cvssV3_1", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L", "baseScore": 5.8, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "LOW"}}], "descriptions": [{"lang": "en", "value": "Multiple Cisco products are affected by a vulnerability in the memory management implementation of Snort 3 that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.\r\n\r\nThis vulnerability is due to incomplete error checking when Snort 3 processes files, which could cause unreleased memory. An attacker could exploit this vulnerability by sending a large number of files to be processed. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a DoS condition."}], "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-misc-dos-6mB22qAK", "name": "cisco-sa-snort3-misc-dos-6mB22qAK"}], "exploits": [{"lang": "en", "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."}], "source": {"advisory": "cisco-sa-snort3-misc-dos-6mB22qAK", "discovery": "EXTERNAL", "defects": ["CSCwr25134"]}, "problemTypes": [{"descriptions": [{"lang": "en", "description": "Missing Release of Memory after Effective Lifetime", "type": "cwe", "cweId": "CWE-401"}]}], "affected": [{"vendor": "Cisco", "product": "Cisco Open Source Snort3", "versions": [{"version": "3.12.2.0", "status": "affected"}, {"version": "3.1.2.0", "status": "affected"}, {"version": "3.1.3.0", "status": "affected"}, 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"3.9.6.0", "status": "affected"}, {"version": "3.10.0.0", "status": "affected"}, {"version": "3.10.2.0", "status": "affected"}, {"version": "3.7.4.0", "status": "affected"}, {"version": "3.9.0.0", "status": "affected"}, {"version": "3.5.2.0", "status": "affected"}, {"version": "3.12.1.0", "status": "affected"}, {"version": "3.6.1.0", "status": "affected"}, {"version": "3.9.2.0", "status": "affected"}, {"version": "3.6.3.0", "status": "affected"}, {"version": "3.9.5.0", "status": "affected"}, {"version": "3.7.1.0", "status": "affected"}, {"version": "3.9.7.0", "status": "affected"}, {"version": "3.7.3.0", "status": "affected"}, {"version": "3.10.1.0", "status": "affected"}, {"version": "3.9.1.0", "status": "affected"}, {"version": "3.11.1.0", "status": "affected"}], "defaultStatus": "unknown"}, {"vendor": "Cisco", "product": "Cisco Secure Firewall Threat Defense (FTD) Software", "versions": [{"version": "7.0.0", "status": "affected"}, {"version": "7.0.0.1", "status": "affected"}, 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"7.4.1", "status": "affected"}, {"version": "7.2.6", "status": "affected"}, {"version": "7.0.6.2", "status": "affected"}, {"version": "7.4.1.1", "status": "affected"}, {"version": "7.2.7", "status": "affected"}, {"version": "7.2.5.2", "status": "affected"}, {"version": "7.3.1.2", "status": "affected"}, {"version": "7.2.8", "status": "affected"}, {"version": "7.6.0", "status": "affected"}, {"version": "7.4.2", "status": "affected"}, {"version": "7.2.8.1", "status": "affected"}, {"version": "7.0.6.3", "status": "affected"}, {"version": "7.4.2.1", "status": "affected"}, {"version": "7.2.9", "status": "affected"}, {"version": "7.0.7", "status": "affected"}, {"version": "7.7.0", "status": "affected"}, {"version": "7.4.2.2", "status": "affected"}, {"version": "7.6.1", "status": "affected"}, {"version": "7.4.2.3", "status": "affected"}, {"version": "7.0.8", "status": "affected"}, {"version": "7.6.2", "status": "affected"}, {"version": "7.7.10", "status": "affected"}, {"version": "7.7.11", "status": "affected"}, {"version": "7.0.8.1", "status": "affected"}, {"version": "7.6.2.1", "status": "affected"}, {"version": "7.7.10.1", "status": "affected"}, {"version": "7.4.2.4", "status": "affected"}, {"version": "7.4.3", "status": "affected"}, {"version": "7.6.4", "status": "affected"}, {"version": "10.0.0", "status": "affected"}, {"version": "7.4.4", "status": "affected"}, {"version": "7.0.9", "status": "affected"}, {"version": "7.4.7", "status": "affected"}], "defaultStatus": "unknown"}], "providerMetadata": {"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco", "dateUpdated": "2026-10-22T19:11:31.788Z"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-76489", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-21T17:14:49.074914Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-22T13:37:52.954Z"}}]}}

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"3.1.18.0"}, {"status": "affected", "version": "3.1.19.0"}, {"status": "affected", "version": "3.1.20.0"}, {"status": "affected", "version": "3.1.21.0"}, {"status": "affected", "version": "3.1.22.0"}, {"status": "affected", "version": "3.1.23.0"}, {"status": "affected", "version": "3.1.24.0"}, {"status": "affected", "version": "3.1.25.0"}, {"status": "affected", "version": "3.1.27.0"}, {"status": "affected", "version": "3.1.28.0"}, {"status": "affected", "version": "3.1.29.0"}, {"status": "affected", "version": "3.1.30.0"}, {"status": "affected", "version": "3.1.31.0"}, {"status": "affected", "version": "3.1.32.0"}, {"status": "affected", "version": "3.1.36.0"}, {"status": "affected", "version": "3.1.38.0"}, {"status": "affected", "version": "3.1.39.0"}, {"status": "affected", "version": "3.1.40.0"}, {"status": "affected", "version": "3.1.41.0"}, {"status": "affected", "version": "3.1.42.0"}, {"status": "affected", "version": "3.1.43.0"}, {"status": "affected", "version": "3.1.45.0"}, {"status": "affected", "version": "3.1.47.0"}, {"status": "affected", "version": "3.1.48.0"}, {"status": "affected", "version": "3.1.50.0"}, {"status": "affected", "version": "3.1.51.0"}, {"status": "affected", "version": "3.1.52.0"}, {"status": "affected", "version": "3.1.53.0"}, {"status": "affected", "version": "3.1.55.0"}, {"status": "affected", "version": "3.1.56.0"}, {"status": "affected", "version": "3.1.57.0"}, {"status": "affected", "version": "3.1.58.0"}, {"status": "affected", "version": "3.1.59.0"}, {"status": "affected", "version": "3.1.60.0"}, {"status": "affected", "version": "3.1.61.0"}, {"status": "affected", "version": "3.1.62.0"}, {"status": "affected", "version": "3.1.63.0"}, {"status": "affected", "version": "3.1.64.0"}, {"status": "affected", "version": "3.1.65.0"}, {"status": "affected", "version": "3.1.66.0"}, {"status": "affected", "version": "3.1.67.0"}, {"status": "affected", "version": "3.1.69.0"}, {"status": "affected", "version": "3.1.70.0"}, {"status": 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"7.0.7"}, {"status": "affected", "version": "7.7.0"}, {"status": "affected", "version": "7.4.2.2"}, {"status": "affected", "version": "7.6.1"}, {"status": "affected", "version": "7.4.2.3"}, {"status": "affected", "version": "7.0.8"}, {"status": "affected", "version": "7.6.2"}, {"status": "affected", "version": "7.7.10"}, {"status": "affected", "version": "7.7.11"}, {"status": "affected", "version": "7.0.8.1"}, {"status": "affected", "version": "7.6.2.1"}, {"status": "affected", "version": "7.7.10.1"}, {"status": "affected", "version": "7.4.2.4"}, {"status": "affected", "version": "7.4.3"}, {"status": "affected", "version": "7.6.4"}, {"status": "affected", "version": "10.0.0"}, {"status": "affected", "version": "7.4.4"}, {"status": "affected", "version": "7.0.9"}, {"status": "affected", "version": "7.4.7"}], "defaultStatus": "unknown"}], "exploits": [{"lang": "en", "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."}], "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-misc-dos-6mB22qAK", "name": "cisco-sa-snort3-misc-dos-6mB22qAK"}], "descriptions": [{"lang": "en", "value": "Multiple Cisco products are affected by a vulnerability in the memory management implementation of Snort 3 that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.\r\n\r\nThis vulnerability is due to incomplete error checking when Snort 3 processes files, which could cause unreleased memory. An attacker could exploit this vulnerability by sending a large number of files to be processed. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a DoS condition."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "cwe", "cweId": "CWE-401", "description": "Missing Release of Memory after Effective Lifetime"}]}], "providerMetadata": {"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco", "dateUpdated": "2026-10-22T19:11:31.788Z"}}}, "cveMetadata": {"cveId": "CVE-2026-76489", "state": "PUBLISHED", "dateUpdated": "2026-10-22T19:11:31.788Z", "dateReserved": "2026-08-19T12:02:03.640Z", "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "datePublished": "2026-10-21T16:17:23.396Z", "assignerShortName": "cisco"}, "dataVersion": "5.2"}

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3 Detection Engine to restart, resulting in an interruption of packet inspection.\r\n\r\nThis vulnerability is due to incomplete error checking when Snort 3 processes files, which could cause unreleased memory. An attacker could exploit this vulnerability by sending a large number of files to be processed. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a DoS condition."}], "id": "CVE-2026-76489", "lastModified": "2026-10-22T14:17:47.043", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "psirt@cisco.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-76489", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-21T17:14:49.074914Z", "version": "2.0.3"}}]}, "published": "2026-10-21T17:19:08.163", "references": [{"source": "psirt@cisco.com", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-misc-dos-6mB22qAK"}], "sourceIdentifier": "psirt@cisco.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "psirt@cisco.com", "type": "Secondary"}]}

{}

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