Unrated severityNVD Advisory· Published Feb 12, 2001· Updated Apr 16, 2026

CVE-2001-0080

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 Systems, Inc./Catalyst 4000
cpe:2.3:h:cisco:catalyst_4000:*:*:*:*:*:*:*:*
Cisco Systems, Inc./Catalyst 5000
cpe:2.3:h:cisco:catalyst_5000:*:*:*:*:*:*:*:*
Cisco Systems, Inc./Catalyst 6000
cpe:2.3:h:cisco:catalyst_6000:*:*:*:*:*:*:*:*

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

www.cisco.com/warp/public/707/catalyst-ssh-protocolmismatch-pub.shtmlnvdPatchVendor Advisory
www.securityfocus.com/bid/2117nvd
exchange.xforce.ibmcloud.com/vulnerabilities/5760nvd

News mentions

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epss	0.011
exploit	0.030
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ransomware	0.000