CVE-2001-1071

Cisco IOS 12.2 and earlier running Cisco Discovery Protocol (CDP) allows remote attackers to cause a denial of service (memory consumption) via a flood of CDP neighbor announcements.

Published: 2001-10-09 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2001-1071 is rated Moderate Risk (49.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.31%). EPSS rose +1.44% over the last day, indicating growing attacker interest. 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-2001-1071

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 0.86% 2.31% +1.44%
2 2025-03-30 1.20% 0.86% -0.33%
3 2025-03-29 — 1.20% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2001-1071

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-2001-1071

Affected software / configurations for CVE-2001-1071

Vendor Product Version Raw CPE
cisco ios 11.1 cpe:2.3:o:cisco:ios:11.1:*:*:*:*:*:*:*
cisco ios 11.2 cpe:2.3:o:cisco:ios:11.2:*:*:*:*:*:*:*
cisco ios 11.3\(11\)b cpe:2.3:o:cisco:ios:11.3\(11\)b:*:*:*:*:*:*:*
cisco ios 12.0\(5.1\)xp cpe:2.3:o:cisco:ios:12.0\(5.1\)xp:*:*:*:*:*:*:*
cisco ios 12.0\(19\) cpe:2.3:o:cisco:ios:12.0\(19\):*:*:*:*:*:*:*
cisco ios 12.1 cpe:2.3:o:cisco:ios:12.1:*:*:*:*:*:*:*
cisco catos 4.5\(1\) cpe:2.3:o:cisco:catos:4.5\(1\):*:*:*:*:*:*:*

References for CVE-2001-1071

cvelogic Threat Intelligence