Denial of Service Vulnerability in Cisco Catalyst Switches
CVE-2004-0551

Currently unrated

Key Information:

Vendor
Cisco
Status
Vendor
CVE Published:
6 August 2004

Summary

Cisco Catalyst switches running CatOS versions prior to 5.5(20) and 8.2(2) are exposed to a denial of service vulnerability. This flaw allows remote attackers to disrupt the service by sending invalid packets during the final acknowledgment phase of TCP's three-way handshake, targeting Telnet, HTTP, and SSH services. Exploiting this vulnerability can lead to system crashes and unexpected reloads, affecting network availability and operational continuity.

References

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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