CVE-2013-6704: Cisco IOS XE does not properly manage memory for TFTP UDP flows, which allows remote attackers to cause a d...

Security readout for executives and security teams

This issue can let a remote attacker exhaust memory on Cisco IOS XE systems through TFTP traffic, disrupting network device availability. The provided sources do not list affected versions or CVSS severity, so urgency depends on whether IOS XE devices can receive or initiate TFTP flows from untrusted networks. Likely exposure is Cisco IOS XE infrastructure where TFTP client or server traffic is enabled or reachable. The bundle does not enumerate affected versions, so inventory must be checked against Cisco’s advisory before scoping impact. Treat as an availability risk for network infrastructure, especially if TFTP is reachable beyond controlled management networks. Confirm affected IOS XE versions before scheduling remediation. Mitigation focus: Review Cisco’s advisory for affected releases and official upgrade guidance.; Restrict TFTP reachability to trusted management networks where possible.; Disable unnecessary TFTP client or server use on IOS XE devices..

Prepared

Jun 14, 2026, 15:13 UTC (UTC+00:00)

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