{ "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-2025-20191", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-20191", "idYear": 2025, "status": "PUBLISHED", "publishedAt": "2025-05-07T17:18:35.677Z", "updatedAt": "2025-05-07T19:46:53.825Z", "importedAt": "2026-10-24T01:57:24.991Z", "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 Denial of Service Vulnerability", "summary": "A vulnerability in the Switch Integrated Security Features (SISF) of Cisco IOS Software, Cisco IOS XE Software, Cisco NX-OS Software, and Cisco Wireless LAN Controller (WLC) AireOS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r\nThis vulnerability is due to the incorrect handling of DHCPv6 packets. An attacker could exploit this vulnerability by sending a crafted DHCPv6 packet to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.", "affected": [ { "vendor": "Cisco", "product": "Cisco NX-OS Software", "defaultStatus": "unknown", "versions": [ { "version": "8.2(5)", "status": "affected" }, { "version": "7.3(5)D1(1)", "status": "affected" }, { "version": "8.4(2)", "status": "affected" }, { "version": "8.4(3)", "status": "affected" }, { "version": "9.2(3)", "status": "affected" }, { "version": "9.2(2v)", "status": "affected" }, { "version": "7.3(4)D1(1)", "status": "affected" }, { "version": "8.2(1)", "status": "affected" }, { "version": "9.2(1)", "status": "affected" }, { "version": "9.2(2t)", "status": "affected" }, { "version": "9.2(3y)", "status": "affected" }, { "version": "7.0(3)I7(6z)", "status": "affected" }, { "version": "9.3(2)", "status": "affected" }, { "version": "7.0(3)I7(3z)", "status": "affected" }, { "version": "7.0(3)IM7(2)", "status": "affected" }, { "version": "7.0(3)I7(5a)", "status": "affected" }, { "version": "8.1(1)", "status": "affected" }, { "version": "8.2(2)", "status": "affected" }, { "version": "8.3(2)", "status": "affected" }, { "version": "7.3(2)D1(3a)", "status": "affected" }, { "version": "9.2(4)", "status": "affected" }, { "version": "8.1(2)", "status": "affected" }, { "version": "7.3(3)D1(1)", "status": "affected" }, { "version": "8.2(3)", "status": "affected" }, { "version": "7.0(3)I7(2)", "status": "affected" }, { "version": "7.0(3)I7(3)", "status": "affected" }, { "version": "8.4(1)", "status": "affected" }, { "version": "7.3(0)DX(1)", "status": "affected" }, { "version": "7.3(2)D1(1)", "status": "affected" }, { "version": "9.3(1)", "status": "affected" }, { "version": "7.0(3)I7(6)", "status": "affected" }, { "version": "7.3(2)D1(2)", "status": "affected" }, { "version": "8.2(4)", "status": "affected" }, { "version": "7.0(3)I7(4)", "status": "affected" }, { "version": "7.0(3)I7(7)", "status": "affected" }, { "version": "9.3(1z)", "status": "affected" }, { "version": "9.2(2)", "status": "affected" }, { "version": "8.1(2a)", "status": "affected" }, { "version": "7.3(2)D1(3)", "status": "affected" }, { "version": "7.0(3)I7(5)", "status": "affected" }, { "version": "7.0(3)I7(1)", "status": "affected" }, { "version": "7.0(3)IA7(2)", "status": "affected" }, { "version": "7.0(3)IA7(1)", "status": "affected" }, { "version": "8.3(1)", "status": "affected" }, { "version": "7.3(1)D1(1)", "status": "affected" }, { "version": "7.3(0)D1(1)", "status": "affected" }, { "version": "9.3(3)", "status": "affected" }, { "version": "7.3(2)D1(1d)", "status": "affected" }, { "version": "7.0(3)I7(8)", "status": "affected" }, { "version": "9.3(4)", "status": "affected" }, { "version": "7.3(6)D1(1)", "status": "affected" }, { "version": "8.2(6)", "status": "affected" }, { "version": "9.3(5)", "status": "affected" }, { "version": "7.0(3)I7(9)", "status": "affected" }, { "version": "9.3(6)", "status": "affected" }, { "version": "10.1(2)", "status": "affected" }, { "version": "10.1(1)", "status": "affected" }, { "version": "8.4(4)", "status": "affected" }, { "version": "7.3(7)D1(1)", "status": "affected" }, { "version": "9.3(5w)", "status": "affected" }, { "version": "8.2(7)", "status": "affected" }, { "version": "9.3(7)", "status": "affected" }, { "version": "9.3(7k)", "status": "affected" }, { "version": "7.0(3)I7(9w)", "status": "affected" }, { "version": "10.2(1)", "status": "affected" }, { "version": "7.3(8)D1(1)", "status": "affected" }, { "version": "9.3(7a)", "status": "affected" }, { "version": "8.2(7a)", "status": "affected" }, { "version": "9.3(8)", "status": "affected" }, { "version": "8.4(4a)", "status": "affected" }, { "version": "8.4(5)", "status": "affected" }, { "version": "7.0(3)I7(10)", "status": "affected" }, { "version": "8.2(8)", "status": "affected" }, { "version": "10.2(1q)", "status": "affected" }, { "version": "10.2(2)", "status": "affected" }, { "version": "9.3(9)", "status": "affected" }, { "version": "10.1(2t)", "status": "affected" }, { "version": "7.3(9)D1(1)", "status": "affected" }, { "version": "10.2(3)", "status": "affected" }, { "version": "8.4(6)", "status": "affected" }, { "version": "10.2(3t)", "status": "affected" }, { "version": "9.3(10)", "status": "affected" }, { "version": "10.2(2a)", "status": "affected" }, { "version": "8.2(9)", "status": "affected" }, { "version": "10.3(1)", "status": "affected" }, { "version": "10.2(4)", "status": "affected" }, { "version": "8.4(7)", "status": "affected" }, { "version": "10.3(2)", "status": "affected" }, { "version": "8.4(6a)", "status": "affected" }, { "version": "9.3(11)", "status": "affected" }, { "version": "10.3(3)", "status": "affected" }, { "version": "10.2(5)", "status": "affected" }, { "version": "8.2(10)", "status": "affected" }, { "version": "9.3(12)", "status": "affected" }, { "version": "10.2(3v)", "status": "affected" }, { "version": "10.4(1)", "status": "affected" }, { "version": "8.4(8)", "status": "affected" }, { "version": "10.3(99w)", "status": "affected" }, { "version": "10.2(6)", "status": "affected" }, { "version": "10.3(3w)", "status": "affected" }, { "version": "10.3(99x)", "status": "affected" }, { "version": "10.3(3o)", "status": "affected" }, { "version": "8.4(9)", "status": "affected" }, { "version": "10.3(4)", "status": "affected" }, { "version": "10.3(3p)", "status": "affected" }, { "version": "10.3(4a)", "status": "affected" }, { "version": "10.4(2)", "status": "affected" }, { "version": "10.3(3q)", "status": "affected" }, { "version": "9.3(13)", "status": "affected" }, { "version": "8.2(11)", "status": "affected" }, { "version": "10.3(5)", "status": "affected" }, { "version": "10.2(7)", "status": "affected" }, { "version": "10.4(3)", "status": "affected" }, { "version": "10.3(3x)", "status": "affected" }, { "version": "10.3(4g)", "status": "affected" }, { "version": "10.2(8)", "status": "affected" }, { "version": "10.3(3r)", "status": "affected" }, { "version": "9.3(14)", "status": "affected" }, { "version": "10.3(4h)", "status": "affected" } ] }, { "vendor": "Cisco", "product": "Cisco Wireless LAN Controller (WLC)", "defaultStatus": "unknown", "versions": [ { "version": "8.10.112.0", "status": "affected" }, { "version": "8.8.120.0", "status": "affected" }, { "version": "8.3.143.0", "status": "affected" }, { "version": "8.3.111.0", "status": "affected" }, { "version": "8.2.164.0", "status": "affected" }, { "version": "8.5.109.0", "status": "affected" }, { "version": "8.3.132.0", "status": "affected" }, { "version": "8.5.105.0", "status": "affected" }, { "version": "8.2.170.0", "status": "affected" }, { "version": "8.2.160.0", "status": "affected" }, { "version": "8.8.100.0", "status": "affected" }, { "version": "8.9.111.0", "status": "affected" }, { "version": "8.7.102.0", "status": "affected" }, { "version": "8.3.102.0", "status": "affected" }, { "version": "8.3.133.0", "status": "affected" }, { "version": "8.3.131.0", "status": "affected" }, { 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{ "version": "8.10.120.0", "status": "affected" }, { "version": "8.10.121.0", "status": "affected" }, { "version": "8.10.113.0", "status": "affected" }, { "version": "8.10.122.0", "status": "affected" }, { "version": "8.10.130.0", "status": "affected" }, { "version": "8.10.141.0", "status": "affected" }, { "version": "8.10.142.0", "status": "affected" }, { "version": "8.5.171.0", "status": "affected" }, { "version": "8.10.150.0", "status": "affected" }, { "version": "8.10.151.0", "status": "affected" }, { "version": "8.10.162.0", "status": "affected" }, { "version": "8.5.182.0", "status": "affected" }, { "version": "8.10.171.0", "status": "affected" }, { "version": "8.10.180.0", "status": "affected" }, { "version": "8.10.181.0", "status": "affected" }, { "version": "8.10.182.0", "status": "affected" }, { "version": "8.10.170.0", "status": "affected" }, { "version": "8.10.183.0", "status": "affected" }, { "version": "8.5.182.7", "status": "affected" }, { "version": "8.5.182.105", "status": "affected" }, { "version": "8.5.182.106", "status": "affected" }, { "version": "8.10.185.0", "status": "affected" }, { "version": "8.5.182.107", "status": "affected" }, { "version": "8.5.182.11", "status": "affected" }, { "version": "8.5.182.108", "status": "affected" }, { "version": "8.10.190.0", "status": "affected" }, { "version": "8.10.195.0", "status": "affected" }, { "version": "8.5.182.12", "status": "affected" } ] } ] } } }