CVE-2001-0566

Catalyst 2900 vulnerability

CVSS

5.0

EPSS

6.4%

EPSS pct

93th

Exploited

No known

Cisco Catalyst 2900XL switch allows a remote attacker to create a denial of service via an empty UDP packet sent to port 161 (SNMP) when SNMP is disabled.

Affected vendor

Cisco

Affected product

Catalyst 2900

CVSS vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Weakness type (CWE)

CWE-20 — Improper Input Validation

Published

2001-08-14

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to availability.

Its EPSS score of 6.4% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 93% of all scored CVEs.

Check your external exposure to CVE-2001-0566

Confirm whether Cisco Catalyst 2900 is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2001-0566.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2001-0566

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2001-0566 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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