CVE-2005-4258: Cisco Catalyst

High severity, CVSS 7.8. EPSS: 2.1% chance of exploitation in the next 30 days.

Unspecified Cisco Catalyst Switches allow remote attackers to cause a denial of service (device crash) via an IP packet with the same source and destination IPs and ports, and with the SYN flag set (aka LanD). NOTE: the provenance of this issue is unknown; the details are obtained solely from the BID.

Affected products

• Cisco Catalyst: version 4.5_(10) only; version sup2plus only; version sup3 only
• Cisco Catalyst 1200 Series: any version
• Cisco Catalyst 1900 Series: any version; version 9.0_0.07 only
• Cisco Catalyst 2800 Series: any version
• Cisco Catalyst 2820: any version; version 9.0_0.07 only
• Cisco Catalyst 2900: any version; version lre_xl only; version xl only
• Cisco Catalyst 2901: any version
• Cisco Catalyst 2902: any version
• Cisco Catalyst 2920: any version
• Cisco Catalyst 2926: any version
• Cisco Catalyst 2926f: any version
• Cisco Catalyst 2926gl: any version
• Cisco Catalyst 2926gs: any version
• Cisco Catalyst 2926t: any version
• Cisco Catalyst 2940: any version
• Cisco Catalyst 2948: any version
• Cisco Catalyst 2948-Ge-Tx: any version
• Cisco Catalyst 2948g-l3: any version
• Cisco Catalyst 2950: any version
• Cisco Catalyst 2950 Lre: any version
• Cisco Catalyst 2955: any version
• Cisco Catalyst 2970: any version
• Cisco Catalyst 2980g: any version
• Cisco Catalyst 2980g-A: any version
• Cisco Catalyst 3000: any version
• and 46 more

Published 2005-12-15. Last modified 2026-06-16.