{"id":"CVE-2026-76489","revision":"06033f34d85c4440918c3666a572ccab","records":[{"revision":"06033f34d85c4440918c3666a572ccab","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-76489","aliases":[],"title":"Multiple Cisco Products Snort 3 Generic File Processing Memory Exhaustion Denial of Service Vulnerability","description":"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.","state":0,"publishedAt":"2026-10-21T16:17:23.396+00:00","modifiedAt":"2026-10-22T19:11:31.788+00:00","affected":[{"ecosystem":"Vendor product","name":"Cisco Open Source Snort3","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"vendor\": \"Cisco\",\n \"product\": \"Cisco Open Source Snort3\",\n \"versions\": [\n {\n \"version\": \"3.12.2.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.2.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.3.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.4.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.5.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.6.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.7.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.8.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.9.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.10.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.12.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.13.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.14.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.15.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.16.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.17.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.18.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.19.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.20.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.21.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.22.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.23.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.24.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.25.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.27.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.28.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.29.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.30.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.31.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.32.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.36.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.38.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.39.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.40.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.41.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.42.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.43.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.45.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.1.47.0\",\n \"status\": 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\"3.9.7.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.7.3.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.10.1.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.9.1.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"3.11.1.0\",\n \"status\": \"affected\"\n }\n ],\n \"defaultStatus\": \"unknown\"\n }"},{"ecosystem":"Vendor product","name":"Cisco Secure Firewall Threat Defense (FTD) Software","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"vendor\": \"Cisco\",\n \"product\": \"Cisco Secure Firewall Threat Defense (FTD) Software\",\n \"versions\": [\n {\n \"version\": \"7.0.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.0.0.1\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.0.1\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.0.1.1\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.0.2\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.2.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.0.2.1\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.0.3\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.2.0.1\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.0.4\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.2.1\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.0.5\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.3.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.2.2\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.2.3\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.3.1\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.2.4\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.0.6\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.2.5\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.2.4.1\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.3.1.1\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.4.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.0.6.1\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.2.5.1\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.4.1\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.2.6\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.0.6.2\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.4.1.1\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.2.7\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.2.5.2\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.3.1.2\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.2.8\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.6.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.4.2\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.2.8.1\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.0.6.3\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.4.2.1\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.2.9\",\n \"status\": \"affected\"\n },\n {\n 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},\n {\n \"version\": \"7.4.4\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.0.9\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"7.4.7\",\n \"status\": \"affected\"\n }\n ],\n \"defaultStatus\": \"unknown\"\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L","score":5.8,"severity":"MEDIUM"}],"references":["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-misc-dos-6mB22qAK"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-76489","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-76489","identifiers":["CVE-2026-76489"]},"retained":false,"historicalAffected":[]}],"coverage":[]}