CVE-2000-0486: Cisco IOS

Medium severity, CVSS 5.0. EPSS: 2.1% chance of exploitation in the next 30 days.

Buffer overflow in Cisco TACACS+ tac_plus server allows remote attackers to cause a denial of service via a malformed packet with a long length field.

Affected products

• Cisco IOS: any version
• Cisco Tacacs+: version f4.0.2alpha only; version f4.0.3alpha only

Published 2000-05-30. Last modified 2026-06-16.