CVE-2004-1433: Multiple versions of Cisco ONS 15327, ONS 15454, and ONS 15454 SDH, including 4.6(0) and 4.6(1), 4.5(x), 4....

Security readout for executives and security teams

This flaw affects older Cisco optical networking platforms. A remote attacker could send malformed TCP or UDP traffic that resets a control card, causing a denial of service. The sources do not show data theft, code execution, or active exploitation, but disruption could matter if these devices support telecom or critical network transport. Exposure is likely limited to organizations still operating legacy Cisco ONS optical transport equipment, especially if management or device-facing TCP/UDP services are reachable from untrusted networks. Treat as a legacy infrastructure availability risk. Prioritize if these platforms support revenue, telecom, or critical transport services, or if they are reachable beyond tightly controlled management networks. Mitigation focus: Review Cisco advisory guidance for affected releases and supported remediation paths.; Restrict device management and control-plane reachability to trusted networks only.; Prioritize upgrade or replacement planning for obsolete Cisco ONS deployments..

Prepared

Jun 30, 2026, 00:54 UTC (UTC+00:00)

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