CVE-2002-1024: Cisco IOS 12.0 through 12.2, when supporting SSH, allows remote attackers to cause a denial of service (CPU...

Security readout for executives and security teams

Certain legacy Cisco IOS devices can be disrupted through malformed SSH traffic, causing heavy CPU use or a crash. The business concern is loss of router or switch availability, especially where SSH management is exposed beyond trusted networks. Exposure is limited to legacy Cisco IOS 12.0 through 12.2 systems with SSH enabled. Highest concern is forgotten production, lab, or embedded network gear where SSH is reachable from untrusted networks. Treat as a legacy infrastructure availability risk. Prioritize if affected routing or switching equipment still supports critical business connectivity or exposes SSH beyond restricted management networks. Mitigation focus: Check Cisco advisory for fixed IOS releases or supported workarounds.; Restrict SSH management access to trusted administration networks only.; Disable SSH on affected devices if not operationally required..

Prepared

Jun 30, 2026, 11:55 UTC (UTC+00:00)

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