{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2026-20066", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-20066", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-03-04T17:49:00.716Z", "updatedAt": "2026-03-04T20:46:18.739Z", "importedAt": "2026-10-24T01:57:55.771Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "Multiple Cisco Products Snort 3 TBD Denial of Service Vulnerability", "summary": "Multiple Cisco products are affected by a vulnerability in the Snort 3 Detection Engine 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 an error in the JSTokenizer normalization logic when the HTTP inspection normalizes JavaScript. 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 cause a DoS condition when the Snort 3 Detection Engine restarts unexpectedly. JSTokenizer is not enabled by default.", "affected": [ { "vendor": "Cisco", "product": "Cisco Secure Firewall Threat Defense (FTD) Software", "defaultStatus": "unknown", "versions": [ { "version": "7.4.0", "status": "affected" }, { "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": "7.6.2", "status": "affected" }, { "version": "7.7.10", "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" } ] }, { "vendor": "Cisco", "product": "Cisco UTD SNORT IPS Engine Software", "defaultStatus": "unknown", "versions": [ { "version": "17.3.1a", "status": "affected" }, { "version": "17.2.1r", "status": "affected" }, { "version": "17.3.2", "status": "affected" }, { "version": "17.4.1a", "status": "affected" }, { "version": "17.5.1", "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": "17.7.1a", "status": "affected" }, { "version": "17.6.2", "status": "affected" }, { "version": "17.8.1a", "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": "17.10.1a", "status": "affected" }, { "version": "17.3.6", "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": "17.9.3a", "status": "affected" }, { "version": "17.12.1a", "status": "affected" }, { "version": "17.9.4", "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": "17.9.4a", "status": "affected" }, { "version": "17.12.2", "status": "affected" }, { "version": "17.13.1a", "status": "affected" }, { "version": "17.9.5a", "status": "affected" }, { "version": "17.12.3", "status": "affected" }, { "version": "17.6.7", "status": "affected" }, { "version": "17.14.1a", "status": "affected" }, { "version": "17.12.4", "status": "affected" }, { "version": "17.12.3a", "status": "affected" }, { "version": "17.15.1a", "status": "affected" }, { "version": "17.6.8", "status": "affected" }, { "version": "17.9.6", "status": "affected" }, { "version": "17.6.8a", "status": "affected" }, { "version": "17.16.1a", "status": "affected" }, { "version": "17.9.5e", "status": "affected" }, { "version": "17.12.4a", "status": "affected" }, { "version": "17.15.2c", "status": "affected" }, { "version": "17.9.5f", "status": "affected" }, { "version": "17.12.4b", "status": "affected" }, { "version": "17.15.2a", "status": "affected" }, { "version": "17.12.5", "status": "affected" }, { "version": "17.17.1", "status": "affected" }, { "version": "17.12.5a", "status": "affected" }, { "version": "17.9.7a", "status": "affected" }, { "version": "17.15.3a", "status": "affected" }, { "version": "17.15.3", "status": "affected" }, { "version": "17.12.5b", "status": "affected" }, { "version": "17.12.5c", "status": "affected" }, { "version": "17.15.4", "status": "affected" }, { "version": "17.9.7b", "status": "affected" }, { "version": "17.18.1", "status": "affected" }, { "version": "17.18.1a", "status": "affected" }, { "version": "17.12.6", "status": "affected" }, { "version": "17.9.8", "status": "affected" }, { "version": "17.15.4c", "status": "affected" }, { "version": "17.12.5d", "status": "affected" }, { "version": "17.18.2", "status": "affected" } ] } ] } } }