{"id":"CVE-2013-5469","aliases":["EUVD-2013-5309","GHSA-7rj5-64mx-9522"],"status":"published","title":"The TCP implementation in Cisco IOS does not properly implement the transitions from the...","description":"The TCP implementation in Cisco IOS does not properly implement the transitions from the ESTABLISHED state to the CLOSED state, which allows remote attackers to cause a denial of service (flood of ACK packets) via a crafted series of ACK and FIN packets, aka Bug ID CSCtz14399.","severity":{"version":"2.0","score":7.1,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02362,"percentile":0.83892,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119"],"published":"2013-08-30T20:00:00Z","modified":"2026-06-16T23:58:52Z","products":[{"vendor":"cisco","product":"ios"}],"references":[{"url":"http://www.securitytracker.com/id/1028969","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"http://www.securityfocus.com/bid/62083","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-5469","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/86794","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://osvdb.org/96764","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-5469"},{"url":"https://github.com/advisories/GHSA-7rj5-64mx-9522"}],"sources":{"cve":[{"id":"CVE-2013-5469","description":"The TCP implementation in Cisco IOS does not properly implement the transitions from the ESTABLISHED state to the CLOSED state, which allows remote attackers to cause a denial of service (flood of ACK packets) via a crafted series of ACK and FIN packets, aka Bug ID CSCtz14399.","status":"published","published":"2013-08-30T20:00:00Z","modified":"2024-08-06T17:15:20.255Z","updated_at":"2026-11-02T14:34:55.508771Z"}],"euvd":[{"id":"EUVD-2013-5309","description":"The TCP implementation in Cisco IOS does not properly implement the transitions from the ESTABLISHED state to the CLOSED state, which allows remote attackers to cause a denial of service (flood of ACK packets) via a crafted series of ACK and FIN packets, aka Bug ID CSCtz14399.","status":"published","published":"2013-08-30T20:00:00Z","modified":"2024-08-06T17:15:20Z","updated_at":"2026-11-03T01:56:28.709538Z"}],"ghsa":[{"id":"GHSA-7rj5-64mx-9522","title":"The TCP implementation in Cisco IOS does not properly implement the transitions from the...","description":"The TCP implementation in Cisco IOS does not properly implement the transitions from the ESTABLISHED state to the CLOSED state, which allows remote attackers to cause a denial of service (flood of ACK packets) via a crafted series of ACK and FIN packets, aka Bug ID CSCtz14399.","status":"published","published":"2022-05-17T01:31:23Z","modified":"2023-02-03T05:04:31Z","cwes":["CWE-119"],"updated_at":"2026-11-02T14:53:33.746621Z"}],"nvd":[{"id":"CVE-2013-5469","description":"The TCP implementation in Cisco IOS does not properly implement the transitions from the ESTABLISHED state to the CLOSED state, which allows remote attackers to cause a denial of service (flood of ACK packets) via a crafted series of ACK and FIN packets, aka Bug ID CSCtz14399.","status":"published","published":"2013-08-30T20:55:08.737Z","modified":"2026-06-16T23:58:52.21Z","cvss":[{"version":"2.0","score":7.1,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:02:35.248411Z"}]}}