{"id":"CVE-2013-6683","aliases":["EUVD-2013-6485","GHSA-634r-jwf8-2jv7"],"status":"published","title":"The IPv6 implementation in Cisco NX-OS does not properly handle neighbor-table adjacencies, which...","description":"The IPv6 implementation in Cisco NX-OS does not properly handle neighbor-table adjacencies, which allows remote attackers to cause a denial of service (NS processing outage) via a series of malformed packets, aka Bug ID CSCtd15904.","severity":{"version":"2.0","score":6.1,"vector":"AV:A/AC:L/Au:N/C:N/I:N/A:C","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00739,"percentile":0.54855,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2013-11-13T15:00:00Z","modified":"2026-06-17T00:00:47Z","products":[{"vendor":"cisco","product":"nx-os"}],"references":[{"url":"http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-6683","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-6683"},{"url":"https://github.com/advisories/GHSA-634r-jwf8-2jv7"}],"sources":{"cve":[{"id":"CVE-2013-6683","description":"The IPv6 implementation in Cisco NX-OS does not properly handle neighbor-table adjacencies, which allows remote attackers to cause a denial of service (NS processing outage) via a series of malformed packets, aka Bug ID CSCtd15904.","status":"published","published":"2013-11-13T15:00:00Z","modified":"2024-09-17T03:23:35.643Z","updated_at":"2026-11-02T14:34:57.195423Z"}],"euvd":[{"id":"EUVD-2013-6485","description":"The IPv6 implementation in Cisco NX-OS does not properly handle neighbor-table adjacencies, which allows remote attackers to cause a denial of service (NS processing outage) via a series of malformed packets, aka Bug ID CSCtd15904.","status":"published","published":"2013-11-13T15:00:00Z","modified":"2024-09-17T03:23:35Z","updated_at":"2026-11-03T00:28:32.08327Z"}],"ghsa":[{"id":"GHSA-634r-jwf8-2jv7","title":"The IPv6 implementation in Cisco NX-OS does not properly handle neighbor-table adjacencies, which...","description":"The IPv6 implementation in Cisco NX-OS does not properly handle neighbor-table adjacencies, which allows remote attackers to cause a denial of service (NS processing outage) via a series of malformed packets, aka Bug ID CSCtd15904.","status":"published","published":"2022-05-17T04:58:10Z","modified":"2023-01-28T05:02:45Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:43:50.187003Z"}],"nvd":[{"id":"CVE-2013-6683","description":"The IPv6 implementation in Cisco NX-OS does not properly handle neighbor-table adjacencies, which allows remote attackers to cause a denial of service (NS processing outage) via a series of malformed packets, aka Bug ID CSCtd15904.","status":"published","published":"2013-11-13T15:55:04.487Z","modified":"2026-06-17T00:00:47.75Z","cvss":[{"version":"2.0","score":6.1,"vector":"AV:A/AC:L/Au:N/C:N/I:N/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:02:40.988689Z"}]}}