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Case File

CVE-2004-0551

MEDIUM · CVSS 5 EPSS 3.13%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2004-08-06 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.0. It affects Cisco. It may be remotely exploitable. It may lead to a denial-of-service condition.

CVE
CVE-2004-0551
Severity
MEDIUM
CVSS
5
EPSS
3.13%
Cisco

Original NVD 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."