CVE-2002-2315: Cisco IOS 11.2.x and 12.0.x does not limit the size of its redirect table, which allows remote attackers to...

Security readout for executives and security teams

This old Cisco IOS issue can make affected routers run out of memory by filling an internal redirect table. Business impact is availability: routing devices could become unstable or stop serving traffic. The source bundle does not provide a CVSS score, confirmed patch details, or evidence of active exploitation. Exposure is most likely on legacy Cisco IOS 11.2.x or 12.0.x routers that can receive ICMP redirect traffic from untrusted networks. Modern environments are less likely to run these versions, but forgotten network infrastructure remains a practical concern. Treat this as a legacy infrastructure availability risk. It is not marked as actively exploited, but affected routers can be business-critical single points of failure. Prioritize discovery and lifecycle decisions over emergency response unless vulnerable devices are internet-facing or unstable. Mitigation focus: Inventory routers for Cisco IOS 11.2.x or 12.0.x.; Check Cisco guidance for fixed software or supported configuration mitigations.; Retire or replace unsupported legacy IOS devices where feasible..

Prepared

Jun 29, 2026, 02:08 UTC (UTC+00:00)

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