CVE-2013-5469: The TCP implementation in Cisco IOS does not properly implement the transitions from the ESTABLISHED state...

Security readout for executives and security teams

This is a Cisco IOS denial-of-service issue in TCP state handling. A remote attacker could trigger an ACK packet flood by manipulating ACK and FIN packet sequences, potentially affecting availability of network devices. The bundle does not provide CVSS, affected versions, or confirmed exploitation. Exposure is most relevant to organizations running Cisco IOS devices that process TCP traffic from untrusted or semi-trusted networks. Exact affected products and versions are not included in the bundle, so inventory must be checked against Cisco’s advisory. Prioritize based on network criticality. This is not evidence of data theft, but a router or infrastructure denial of service can disrupt operations. Confirm affected Cisco IOS versions before scheduling remediation. Mitigation focus: Review Cisco’s advisory for affected and fixed IOS releases.; Prioritize remediation for internet-facing or critical routing infrastructure.; Apply vendor-recommended updates or workarounds where applicable..

Prepared

Jun 14, 2026, 15:32 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.