CVE-2004-0551

MediumCVSS 5.0/10Last modified Jun 16, 2026

Description

Cisco CatOS 5.x before 5.5(20) through 8.x before 8.2(2) and 8.3(2)GLX, as used in Catalyst switches, allows remote attackers to cause a denial of service (system crash and reload) by sending invalid packets instead of the final ACK portion of the three-way handshake to the (1) Telnet, (2) HTTP, or (3) SSH services, aka "TCP-ACK DoS attack."

Metrics

CVSS 2.0 5.0/10AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected software

No affected versions have been published.

Timeline

Published
Aug 6, 2004
Last modified
Jun 16, 2026
NVD status
Modified

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CVE-2004-0551: Medium severity, CVSS 5.0 | Vulnix