CVE-2001-0429

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.

Published: 2001-07-02 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2001-0429 is rated Moderate Risk (45.3/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.44%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2001-0429

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.50% 1.44% +0.93%
2 2025-03-30 0.56% 0.50% -0.06%
3 2025-03-29 — 0.56% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2001-0429

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2001-0429

Affected software / configurations for CVE-2001-0429

Vendor Product Version Raw CPE
cisco catos 4.5\(11\) cpe:2.3:o:cisco:catos:4.5\(11\):*:*:*:*:*:*:*
cisco catos 4.5.10 cpe:2.3:o:cisco:catos:4.5.10:*:*:*:*:*:*:*
cisco catos 5.5\(4b\) cpe:2.3:o:cisco:catos:5.5\(4b\):*:*:*:*:*:*:*
cisco catos 5.5\(6\) cpe:2.3:o:cisco:catos:5.5\(6\):*:*:*:*:*:*:*
cisco catos 6.1\(1c\) cpe:2.3:o:cisco:catos:6.1\(1c\):*:*:*:*:*:*:*
cisco catos 6.1\(2\) cpe:2.3:o:cisco:catos:6.1\(2\):*:*:*:*:*:*:*
cisco catos 6.1.2 cpe:2.3:o:cisco:catos:6.1.2:*:*:*:*:*:*:*

References for CVE-2001-0429

cvelogic Threat Intelligence