CVE-2001-0080

Cisco Catalyst 4000 5000 6000 - Denial of Service via SSH Protocol Mismatch

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2001-0080. PoCs published by blackangels.

AI-analyzed exploit summary This exploit targets a denial-of-service vulnerability in Cisco Catalyst devices by sending a malformed SSH connection request, causing the device to reset. It is part of a larger tool called 'Cisco Global Exploiter' that includes multiple Cisco vulnerabilities.

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.

Exploits (1)

exploitdb WORKING POC VERIFIED
by blackangels · perldoshardware
https://www.exploit-db.com/exploits/20509

This exploit targets a denial-of-service vulnerability in Cisco Catalyst devices by sending a malformed SSH connection request, causing the device to reset. It is part of a larger tool called 'Cisco Global Exploiter' that includes multiple Cisco vulnerabilities.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Cisco Catalyst 4000, 5000, and 6000 devices with SSH and 3DES encryption (versions 6.1(1), 6.1(1a), 6.1(1b))
No auth needed
Prerequisites: Network access to the target device · SSH service enabled on the target device
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/5760
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/2117
Patch, Vendor Advisory vendor-advisory x_refsource_cisco
http://www.cisco.com/warp/public/707/catalyst-ssh-protocolmismatch-pub.shtml

Scores

EPSS 0.0895
EPSS Percentile 94.6%

Details

Status published
Products (3)
cisco/catalyst_4000
cisco/catalyst_5000
cisco/catalyst_6000
Published Feb 12, 2001
Tracked Since Feb 18, 2026