{ "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-2024-20455", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-20455", "idYear": 2024, "status": "PUBLISHED", "publishedAt": "2024-09-25T16:18:50.066Z", "updatedAt": "2024-09-25T19:47:05.368Z", "importedAt": "2026-10-24T01:57:07.518Z", "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": null, "summary": "A vulnerability in the process that classifies traffic that is going to the Unified Threat Defense (UTD) component of Cisco IOS XE Software in controller mode could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r This vulnerability exists because UTD improperly handles certain packets as those packets egress an SD-WAN IPsec tunnel. An attacker could exploit this vulnerability by sending crafted traffic through an SD-WAN IPsec tunnel that is configured on an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.\r\n\r Note: SD-WAN tunnels that are configured with Generic Routing Encapsulation (GRE) are not affected by this vulnerability.", "affected": [ { "vendor": "Cisco", "product": "Cisco IOS XE Software", "versions": [ { "version": "17.1.1", "status": "affected" }, { "version": "17.1.1a", "status": "affected" }, { "version": "17.1.1s", "status": "affected" }, { "version": "17.1.1t", "status": "affected" }, { "version": "17.1.3", "status": "affected" }, { "version": "17.2.1", "status": "affected" }, { "version": "17.2.1r", "status": "affected" }, { "version": "17.2.1a", "status": "affected" }, { "version": "17.2.1v", "status": "affected" }, { "version": "17.2.2", "status": "affected" }, { "version": "17.2.3", "status": "affected" }, { "version": "17.3.1", "status": "affected" }, { "version": "17.3.2", "status": "affected" }, { "version": "17.3.3", "status": "affected" }, { "version": "17.3.1a", "status": "affected" }, { "version": "17.3.1w", "status": "affected" }, { "version": "17.3.2a", "status": "affected" }, { "version": "17.3.1x", "status": "affected" }, { "version": "17.3.1z", "status": "affected" }, { "version": "17.3.4", "status": "affected" }, { "version": "17.3.5", "status": "affected" }, { "version": "17.3.4a", "status": "affected" }, { "version": "17.3.6", "status": "affected" }, { "version": "17.3.4b", "status": "affected" }, { "version": "17.3.4c", "status": "affected" }, { "version": "17.3.5a", "status": "affected" }, { "version": "17.3.5b", "status": "affected" }, { "version": "17.3.7", "status": "affected" }, { "version": "17.3.8", "status": "affected" }, { "version": "17.3.8a", "status": "affected" }, { "version": "17.4.1", "status": "affected" }, { "version": "17.4.2", "status": "affected" }, { "version": "17.4.1a", "status": "affected" }, { "version": "17.4.1b", "status": "affected" }, { "version": "17.4.2a", "status": "affected" }, { "version": "17.5.1", "status": "affected" }, { "version": "17.5.1a", "status": "affected" }, { "version": "17.6.1", "status": "affected" }, { "version": "17.6.2", "status": "affected" }, { "version": "17.6.1w", "status": "affected" }, { "version": "17.6.1a", "status": "affected" }, { "version": "17.6.1x", "status": "affected" }, { "version": "17.6.3", "status": "affected" }, { "version": "17.6.1y", "status": "affected" }, { "version": "17.6.1z", "status": "affected" }, { "version": "17.6.3a", "status": "affected" }, { "version": "17.6.4", "status": "affected" }, { "version": "17.6.1z1", "status": "affected" }, { "version": "17.6.5", "status": "affected" }, { "version": "17.6.6", "status": "affected" }, { "version": "17.6.6a", "status": "affected" }, { "version": "17.6.5a", "status": "affected" }, { "version": "17.7.1", "status": "affected" }, { "version": "17.7.1a", "status": "affected" }, { "version": "17.7.1b", "status": "affected" }, { "version": "17.7.2", "status": "affected" }, { "version": "17.10.1", "status": "affected" }, { "version": "17.10.1a", "status": "affected" }, { "version": "17.10.1b", "status": "affected" }, { "version": "17.8.1", "status": "affected" }, { "version": "17.8.1a", "status": "affected" }, { "version": "17.9.1", "status": "affected" }, { "version": "17.9.1w", "status": "affected" }, { "version": "17.9.2", "status": "affected" }, { "version": "17.9.1a", "status": "affected" }, { "version": "17.9.1x", "status": "affected" }, { "version": "17.9.1y", "status": "affected" }, { "version": "17.9.3", "status": "affected" }, { "version": "17.9.2a", "status": "affected" }, { "version": "17.9.1x1", "status": "affected" }, { "version": "17.9.3a", "status": "affected" }, { "version": "17.9.4", "status": "affected" }, { "version": "17.9.1y1", "status": "affected" }, { "version": "17.9.5", "status": "affected" }, { "version": "17.9.4a", "status": "affected" }, { "version": "17.9.5a", "status": "affected" }, { "version": "17.9.5b", "status": "affected" }, { "version": "17.11.1", "status": "affected" }, { "version": "17.11.1a", "status": "affected" }, { "version": "17.12.1", "status": "affected" }, { "version": "17.12.1w", "status": "affected" }, { "version": "17.12.1a", "status": "affected" }, { "version": "17.12.2", "status": "affected" }, { "version": "17.12.2a", "status": "affected" }, { "version": "17.13.1", "status": "affected" }, { "version": "17.13.1a", "status": "affected" }, { "version": "17.11.99SW", "status": "affected" } ] }, { "vendor": "Cisco", "product": "Cisco IOS XE Catalyst SD-WAN", "versions": [ { "version": "17.5.1a", "status": "affected" }, { "version": "17.6.1a", "status": "affected" }, { "version": "17.6.2", "status": "affected" }, { "version": "17.6.4", "status": "affected" }, { "version": "17.7.1a", "status": "affected" }, { "version": "17.9.1a", "status": "affected" }, { "version": "17.9.2a", "status": "affected" }, { "version": "17.9.3a", "status": "affected" }, { "version": "17.9.4", "status": "affected" }, { "version": "17.8.1a", "status": "affected" }, { "version": "17.10.1a", "status": "affected" }, { "version": "17.11.1a", "status": "affected" }, { "version": "17.12.1a", "status": "affected" }, { "version": "17.13.1a", "status": "affected" } ] } ] } } }