{"id":"CVE-2025-20359","state":"PUBLISHED","title":"Multiple Cisco Products Snort 3 MIME Information Disclosure or Denial of Service Vulnerability","description":"Multiple Cisco products are affected by a vulnerability in the Snort 3 HTTP Decoder that could allow an unauthenticated, remote attacker to cause the disclosure of possible sensitive data or cause the Snort 3 Detection Engine to crash.\r\n\r\nThis vulnerability is due to an error in the logic of buffer handling when the MIME fields of the HTTP header are parsed. This can result in a buffer under-read. An attacker could exploit this vulnerability by sending crafted HTTP packets through an established connection that is parsed by Snort 3. A successful exploit could allow the attacker to induce one of two possible outcomes: the unexpected restarting of the Snort 3 Detection Engine, which could cause a denial of service (DoS) condition, or information disclosure of sensitive information in the Snort 3 data stream. Due to the under-read condition, it is possible that sensitive information that is not valid connection data could be returned.","publishedAt":"2025-10-15T16:17:31.374Z","updatedAt":"2026-02-12T18:57:32.563Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","source":"cisco"},"assigner":"cisco","products":["Cisco Cisco Cyber Vision","Cisco Cisco Secure Firewall Threat Defense (FTD) Software","Cisco Cisco UTD SNORT IPS Engine Software"],"affected":[{"vendor":"Cisco","product":"Cisco Cyber Vision","defaultStatus":"unknown","versions":[{"version":"3.0.0","status":"affected"},{"version":"3.0.2","status":"affected"},{"version":"3.0.3","status":"affected"},{"version":"3.0.1","status":"affected"},{"version":"3.1.0","status":"affected"},{"version":"3.0.4","status":"affected"},{"version":"3.1.1","status":"affected"},{"version":"3.1.2","status":"affected"},{"version":"3.2.0","status":"affected"},{"version":"3.0.5","status":"affected"},{"version":"3.2.1","status":"affected"},{"version":"3.0.6","status":"affected"},{"version":"3.2.2","status":"affected"},{"version":"3.2.3","status":"affected"},{"version":"3.2.4","status":"affected"},{"version":"4.0.0","status":"affected"},{"version":"4.0.1","status":"affected"},{"version":"4.0.2","status":"affected"},{"version":"4.0.3","status":"affected"},{"version":"4.1.0","status":"affected"},{"version":"4.1.1","status":"affected"},{"version":"4.1.2","status":"affected"},{"version":"4.1.3","status":"affected"},{"version":"4.1.4","status":"affected"},{"version":"4.2.0","status":"affected"},{"version":"4.2.1","status":"affected"},{"version":"4.1.5","status":"affected"},{"version":"4.2.2","status":"affected"},{"version":"4.2.X","status":"affected"},{"version":"4.2.3","status":"affected"},{"version":"4.2.4","status":"affected"},{"version":"4.2.6","status":"affected"},{"version":"4.1.6","status":"affected"},{"version":"4.3.0","status":"affected"},{"version":"4.3.1","status":"affected"},{"version":"4.3.2","status":"affected"},{"version":"4.3.3","status":"affected"},{"version":"4.4.0","status":"affected"},{"version":"4.4.1","status":"affected"},{"version":"4.4.2","status":"affected"},{"version":"4.4.3","status":"affected"},{"version":"4.1.7","status":"affected"},{"version":"5.0.0","status":"affected"},{"version":"5.0.1","status":"affected"},{"version":"5.0.2","status":"affected"},{"version":"5.1.0","status":"affected"},{"version":"5.1.1","status":"affected"},{"version":"5.1.2","status":"affected"},{"version":"5.1.3","status":"affected"},{"version":"5.2.0","status":"affected"},{"version":"5.2.1","status":"affected"}]},{"vendor":"Cisco","product":"Cisco Secure Firewall Threat Defense (FTD) Software","defaultStatus":"unknown","versions":[{"version":"7.4.1","status":"affected"},{"version":"7.4.1.1","status":"affected"},{"version":"7.6.0","status":"affected"},{"version":"7.4.2","status":"affected"},{"version":"7.4.2.1","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":"7.4.2.4","status":"affected"}]},{"vendor":"Cisco","product":"Cisco UTD SNORT IPS Engine Software","defaultStatus":"unknown","versions":[{"version":"3.17.1S","status":"affected"},{"version":"16.12.3","status":"affected"},{"version":"16.12.4","status":"affected"},{"version":"17.3.1a","status":"affected"},{"version":"16.6.6","status":"affected"},{"version":"16.12.2","status":"affected"},{"version":"3.17.0S","status":"affected"},{"version":"16.6.5","status":"affected"},{"version":"17.2.1r","status":"affected"},{"version":"17.1.1","status":"affected"},{"version":"16.6.7a","status":"affected"},{"version":"16.6.1","status":"affected"},{"version":"16.12.1a","status":"affected"},{"version":"17.3.2","status":"affected"},{"version":"17.4.1a","status":"affected"},{"version":"16.12.5","status":"affected"},{"version":"17.5.1","status":"affected"},{"version":"16.6.9","status":"affected"},{"version":"17.3.3","status":"affected"},{"version":"17.5.1a","status":"affected"},{"version":"17.3.4","status":"affected"},{"version":"17.3.4a","status":"affected"},{"version":"17.4.2","status":"affected"},{"version":"17.4.1b","status":"affected"},{"version":"17.6.1a","status":"affected"},{"version":"16.6.10","status":"affected"},{"version":"17.7.1a","status":"affected"},{"version":"16.12.6","status":"affected"},{"version":"17.6.2","status":"affected"},{"version":"17.8.1a","status":"affected"},{"version":"16.12.7","status":"affected"},{"version":"17.3.5","status":"affected"},{"version":"17.6.3","status":"affected"},{"version":"17.6.3a","status":"affected"},{"version":"17.7.2","status":"affected"},{"version":"17.9.1a","status":"affected"},{"version":"17.6.4","status":"affected"},{"version":"17.3.6","status":"affected"},{"version":"16.12.8","status":"affected"},{"version":"17.3.7","status":"affected"},{"version":"17.9.2a","status":"affected"},{"version":"17.6.5","status":"affected"},{"version":"17.11.1a","status":"affected"},{"version":"17.12.1a","status":"affected"},{"version":"17.6.6","status":"affected"},{"version":"17.3.8","status":"affected"},{"version":"17.3.8a","status":"affected"},{"version":"17.6.6a","status":"affected"},{"version":"17.12.2","status":"affected"},{"version":"17.12.3","status":"affected"},{"version":"17.6.7","status":"affected"},{"version":"17.12.3a","status":"affected"},{"version":"17.12.4","status":"affected"},{"version":"17.6.8","status":"affected"},{"version":"17.6.8a","status":"affected"},{"version":"17.12.4a","status":"affected"},{"version":"17.15.2c","status":"affected"},{"version":"17.12.4b","status":"affected"},{"version":"17.15.2a","status":"affected"},{"version":"17.12.5","status":"affected"},{"version":"17.15.3a","status":"affected"},{"version":"17.15.3","status":"affected"},{"version":"17.12.5b","status":"affected"},{"version":"17.15.4","status":"affected"}]}],"references":["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-mime-vulns-tTL8PgVH"],"weaknesses":["CWE-127"],"ingestedAt":"2026-10-29T20:08:39.238Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/20xxx/CVE-2025-20359.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-20359","state":"PUBLISHED","datePublished":"2025-10-15T16:17:31.374Z","dateUpdated":"2026-02-12T18:57:32.563Z","assignerShortName":"cisco","assignerOrgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateReserved":"2024-10-10T19:15:13.258Z"},"containers":{"cna":{"title":"Multiple Cisco Products Snort 3 MIME Information Disclosure or Denial of Service Vulnerability","descriptions":[{"lang":"en","value":"Multiple Cisco products are affected by a vulnerability in the Snort 3 HTTP Decoder that could allow an unauthenticated, remote attacker to cause the disclosure of possible sensitive data or cause the Snort 3 Detection Engine to crash.\r\n\r\nThis vulnerability is due to an error in the logic of buffer handling when the MIME fields of the HTTP header are parsed. This can result in a buffer under-read. An attacker could exploit this vulnerability by sending crafted HTTP packets through an established connection that is parsed by Snort 3. A successful exploit could allow the attacker to induce one of two possible outcomes: the unexpected restarting of the Snort 3 Detection Engine, which could cause a denial of service (DoS) condition, or information disclosure of sensitive information in the Snort 3 data stream. Due to the under-read condition, it is possible that sensitive information that is not valid connection data could be returned."}],"affected":[{"vendor":"Cisco","product":"Cisco Cyber Vision","defaultStatus":"unknown","versions":[{"version":"3.0.0","status":"affected"},{"version":"3.0.2","status":"affected"},{"version":"3.0.3","status":"affected"},{"version":"3.0.1","status":"affected"},{"version":"3.1.0","status":"affected"},{"version":"3.0.4","status":"affected"},{"version":"3.1.1","status":"affected"},{"version":"3.1.2","status":"affected"},{"version":"3.2.0","status":"affected"},{"version":"3.0.5","status":"affected"},{"version":"3.2.1","status":"affected"},{"version":"3.0.6","status":"affected"},{"version":"3.2.2","status":"affected"},{"version":"3.2.3","status":"affected"},{"version":"3.2.4","status":"affected"},{"version":"4.0.0","status":"affected"},{"version":"4.0.1","status":"affected"},{"version":"4.0.2","status":"affected"},{"version":"4.0.3","status":"affected"},{"version":"4.1.0","status":"affected"},{"version":"4.1.1","status":"affected"},{"version":"4.1.2","status":"affected"},{"version":"4.1.3","status":"affected"},{"version":"4.1.4","status":"affected"},{"version":"4.2.0","status":"affected"},{"version":"4.2.1","status":"affected"},{"version":"4.1.5","status":"affected"},{"version":"4.2.2","status":"affected"},{"version":"4.2.X","status":"affected"},{"version":"4.2.3","status":"affected"},{"version":"4.2.4","status":"affected"},{"version":"4.2.6","status":"affected"},{"version":"4.1.6","status":"affected"},{"version":"4.3.0","status":"affected"},{"version":"4.3.1","status":"affected"},{"version":"4.3.2","status":"affected"},{"version":"4.3.3","status":"affected"},{"version":"4.4.0","status":"affected"},{"version":"4.4.1","status":"affected"},{"version":"4.4.2","status":"affected"},{"version":"4.4.3","status":"affected"},{"version":"4.1.7","status":"affected"},{"version":"5.0.0","status":"affected"},{"version":"5.0.1","status":"affected"},{"version":"5.0.2","status":"affected"},{"version":"5.1.0","status":"affected"},{"version":"5.1.1","status":"affected"},{"version":"5.1.2","status":"affected"},{"version":"5.1.3","status":"affected"},{"version":"5.2.0","status":"affected"},{"version":"5.2.1","status":"affected"}]},{"vendor":"Cisco","product":"Cisco Secure Firewall Threat Defense (FTD) Software","defaultStatus":"unknown","versions":[{"version":"7.4.1","status":"affected"},{"version":"7.4.1.1","status":"affected"},{"version":"7.6.0","status":"affected"},{"version":"7.4.2","status":"affected"},{"version":"7.4.2.1","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":"7.4.2.4","status":"affected"}]},{"vendor":"Cisco","product":"Cisco UTD SNORT IPS Engine Software","defaultStatus":"unknown","versions":[{"version":"3.17.1S","status":"affected"},{"version":"16.12.3","status":"affected"},{"version":"16.12.4","status":"affected"},{"version":"17.3.1a","status":"affected"},{"version":"16.6.6","status":"affected"},{"version":"16.12.2","status":"affected"},{"version":"3.17.0S","status":"affected"},{"version":"16.6.5","status":"affected"},{"version":"17.2.1r","status":"affected"},{"version":"17.1.1","status":"affected"},{"version":"16.6.7a","status":"affected"},{"version":"16.6.1","status":"affected"},{"version":"16.12.1a","status":"affected"},{"version":"17.3.2","status":"affected"},{"version":"17.4.1a","status":"affected"},{"version":"16.12.5","status":"affected"},{"version":"17.5.1","status":"affected"},{"version":"16.6.9","status":"affected"},{"version":"17.3.3","status":"affected"},{"version":"17.5.1a","status":"affected"},{"version":"17.3.4","status":"affected"},{"version":"17.3.4a","status":"affected"},{"version":"17.4.2","status":"affected"},{"version":"17.4.1b","status":"affected"},{"version":"17.6.1a","status":"affected"},{"version":"16.6.10","status":"affected"},{"version":"17.7.1a","status":"affected"},{"version":"16.12.6","status":"affected"},{"version":"17.6.2","status":"affected"},{"version":"17.8.1a","status":"affected"},{"version":"16.12.7","status":"affected"},{"version":"17.3.5","status":"affected"},{"version":"17.6.3","status":"affected"},{"version":"17.6.3a","status":"affected"},{"version":"17.7.2","status":"affected"},{"version":"17.9.1a","status":"affected"},{"version":"17.6.4","status":"affected"},{"version":"17.3.6","status":"affected"},{"version":"16.12.8","status":"affected"},{"version":"17.3.7","status":"affected"},{"version":"17.9.2a","status":"affected"},{"version":"17.6.5","status":"affected"},{"version":"17.11.1a","status":"affected"},{"version":"17.12.1a","status":"affected"},{"version":"17.6.6","status":"affected"},{"version":"17.3.8","status":"affected"},{"version":"17.3.8a","status":"affected"},{"version":"17.6.6a","status":"affected"},{"version":"17.12.2","status":"affected"},{"version":"17.12.3","status":"affected"},{"version":"17.6.7","status":"affected"},{"version":"17.12.3a","status":"affected"},{"version":"17.12.4","status":"affected"},{"version":"17.6.8","status":"affected"},{"version":"17.6.8a","status":"affected"},{"version":"17.12.4a","status":"affected"},{"version":"17.15.2c","status":"affected"},{"version":"17.12.4b","status":"affected"},{"version":"17.15.2a","status":"affected"},{"version":"17.12.5","status":"affected"},{"version":"17.15.3a","status":"affected"},{"version":"17.15.3","status":"affected"},{"version":"17.12.5b","status":"affected"},{"version":"17.15.4","status":"affected"}]}],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-mime-vulns-tTL8PgVH","name":"cisco-sa-snort3-mime-vulns-tTL8PgVH"}],"metrics":[{"format":"cvssV3_1","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"LOW"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-127","lang":"en","description":"Buffer 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