{ "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-2024-20434", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-20434", "idYear": 2024, "status": "PUBLISHED", "publishedAt": "2024-09-25T16:29:54.386Z", "updatedAt": "2024-10-07T15:11:22.263Z", "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 Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on the control plane of an affected device.\r\n\r This vulnerability is due to improper handling of frames with VLAN tag information. An attacker could exploit this vulnerability by sending crafted frames to an affected device. A successful exploit could allow the attacker to render the control plane of the affected device unresponsive. The device would not be accessible through the console or CLI, and it would not respond to ping requests, SNMP requests, or requests from other control plane protocols. Traffic that is traversing the device through the data plane is not affected. A reload of the device is required to restore control plane services.", "affected": [ { "vendor": "Cisco", "product": "Cisco IOS XE Software", "versions": [ { "version": "16.6.1", "status": "affected" }, { "version": "16.6.2", "status": "affected" }, { "version": "16.6.3", "status": "affected" }, { "version": "16.6.4", "status": "affected" }, { "version": "16.6.5", "status": "affected" }, { "version": "16.6.4a", "status": "affected" }, { "version": "16.6.6", "status": "affected" }, { "version": "16.6.7", "status": "affected" }, { "version": "16.6.8", "status": "affected" }, { "version": "16.6.9", "status": "affected" }, { "version": "16.6.10", "status": "affected" }, { "version": "16.7.1", "status": "affected" }, { "version": "16.8.1", "status": "affected" }, { "version": "16.8.1a", "status": "affected" }, { "version": "16.8.1s", "status": "affected" }, { "version": "16.9.1", "status": "affected" }, { "version": "16.9.2", "status": "affected" }, { "version": "16.9.1s", "status": "affected" }, { "version": "16.9.3", "status": "affected" }, { "version": "16.9.4", "status": "affected" }, { "version": "16.9.5", "status": "affected" }, { "version": "16.9.6", "status": "affected" }, { "version": "16.9.7", "status": "affected" }, { "version": "16.9.8", "status": "affected" }, { "version": "16.10.1", "status": "affected" }, { "version": "16.10.1s", "status": "affected" }, { "version": "16.10.1e", "status": "affected" }, { "version": "16.11.1", "status": "affected" }, { "version": "16.11.1b", "status": "affected" }, { "version": "16.11.1s", "status": "affected" }, { "version": "16.12.1", "status": "affected" }, { "version": "16.12.1s", "status": "affected" }, { "version": "16.12.1c", "status": "affected" }, { "version": "16.12.2", "status": "affected" }, { "version": "16.12.3", "status": "affected" }, { "version": "16.12.8", "status": "affected" }, { "version": "16.12.2s", "status": "affected" }, { "version": "16.12.4", "status": "affected" }, { "version": "16.12.3s", "status": "affected" }, { "version": "16.12.3a", "status": "affected" }, { "version": "16.12.4a", "status": "affected" }, { "version": "16.12.5", "status": "affected" }, { "version": "16.12.6", "status": "affected" }, { "version": "16.12.5b", "status": "affected" }, { "version": "16.12.6a", "status": "affected" }, { "version": "16.12.7", "status": "affected" }, { "version": "17.1.1", "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": "17.2.1a", "status": "affected" }, { "version": "17.3.1", "status": "affected" }, { "version": "17.3.2", "status": "affected" }, { "version": "17.3.3", "status": "affected" }, { "version": "17.3.2a", "status": "affected" }, { "version": "17.3.4", "status": "affected" }, { "version": "17.3.5", "status": "affected" }, { "version": "17.3.6", "status": "affected" }, { "version": "17.3.4b", "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": "17.5.1", "status": "affected" }, { "version": "17.6.1", "status": "affected" }, { "version": "17.6.2", "status": "affected" }, { "version": "17.6.3", "status": "affected" }, { "version": "17.6.4", "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": "17.6.7", "status": "affected" }, { "version": "17.7.1", "status": "affected" }, { "version": "17.10.1", "status": "affected" }, { "version": "17.10.1b", "status": "affected" }, { "version": "17.8.1", "status": "affected" }, { "version": "17.9.1", "status": "affected" }, { "version": "17.9.2", "status": "affected" }, { "version": "17.9.3", "status": "affected" }, { "version": "17.9.4", "status": "affected" }, { "version": "17.9.5", "status": "affected" }, { "version": "17.9.4a", "status": "affected" }, { "version": "17.11.1", "status": "affected" }, { "version": "17.12.1", "status": "affected" }, { "version": "17.12.2", "status": "affected" }, { "version": "17.12.3", "status": "affected" }, { "version": "17.13.1", "status": "affected" }, { "version": "17.14.1", "status": "affected" }, { "version": "17.11.99SW", "status": "affected" } ] } ] } } }