What’s Vulnerable › Vulnerabilities

CVE-2001-0080

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 8.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2001-02-12 · updated 2026-06-16

Description

Cisco Catalyst 6000, 5000, or 4000 switches allow remote attackers to cause a denial of service by connecting to the SSH service with a non-SSH client, which generates a protocol mismatch error.

Affected products

• Cisco Catalyst 4000: all versions
• Cisco Catalyst 5000: all versions
• Cisco Catalyst 6000: all versions

References

• http://www.cisco.com/warp/public/707/catalyst-ssh-protocolmismatch-pub.shtml
• http://www.securityfocus.com/bid/2117
• https://exchange.xforce.ibmcloud.com/vulnerabilities/5760
• http://www.cisco.com/warp/public/707/catalyst-ssh-protocolmismatch-pub.shtml
• http://www.securityfocus.com/bid/2117
• https://exchange.xforce.ibmcloud.com/vulnerabilities/5760

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