What’s Vulnerable › Vulnerabilities

CVE-2001-0429

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2001-07-02 · updated 2026-06-16

Description

Cisco Catalyst 5000 series switches 6.1(2) and earlier will forward an 802.1x frame on a Spanning Tree Protocol (STP) blocked port, which causes a network storm and a denial of service.

Affected products

• Cisco Catos: 4.5(11), 4.5.10, 5.5(4b), 5.5(6), 6.1(1c), 6.1(2) (+1)

References

• http://www.ciac.org/ciac/bulletins/l-072.shtml
• http://www.cisco.com/warp/public/707/cat5k-8021x-vuln-pub.shtml
• http://www.securityfocus.com/bid/2604
• https://exchange.xforce.ibmcloud.com/vulnerabilities/6379
• http://www.ciac.org/ciac/bulletins/l-072.shtml
• http://www.cisco.com/warp/public/707/cat5k-8021x-vuln-pub.shtml
• http://www.securityfocus.com/bid/2604
• https://exchange.xforce.ibmcloud.com/vulnerabilities/6379

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