CVE-2001-0566
Cisco Catalyst 2900XL switch allows a remote attacker to create a denial of service via an empty...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2001-0566- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-20
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2001-0566- Updated
- 2026-11-02
EUVDEUVD-2001-0558 No score
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.
- Record
EUVD-2001-0558- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-w4fp-j2mm-3rrv No score
Cisco Catalyst 2900XL switch allows a remote attacker to create a denial of service via an empty...
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.
- Record
GHSA-w4fp-j2mm-3rrv- Weakness
- CWE-20
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Cisco Catalyst 2900 12.0 - '5.2'XU SNMP Empty UDP Packet Denial of Service | 2001-05-03 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2001-0566 is a medium vulnerability (CVSS 5.0) in Cisco Catalyst 2900, published July 27, 2001. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 6.42%, the 93rd percentile. No source names a fixed version.