CVE-2002-2239: The Cisco Optical Service Module (OSM) for the Catalyst 6500 and 7600 series running Cisco IOS 12.1(8)E thr...

Security readout for executives and security teams

This is an old denial-of-service issue in Cisco OSM modules used with Catalyst 6500 and 7600 platforms. A malformed packet could hang the affected module, disrupting network service. The source bundle does not provide CVSS scoring or evidence of active exploitation. Exposure is likely limited to legacy Cisco Catalyst 6500 or 7600 deployments with OSM line cards on the specified IOS 12.1E releases. Organizations without these platforms, modules, or versions are unlikely to be affected. Treat this as a legacy infrastructure availability risk. It is not described as data theft or code execution, but affected core network equipment could create meaningful outage impact if still deployed. Mitigation focus: Inventory Catalyst 6500 and 7600 systems for OSM line cards.; Identify whether IOS versions fall between 12.1(8)E and 12.1(13.4)E.; Review Cisco’s advisory for fixed software or vendor-supported workarounds..

Prepared

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

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