CVE-2002-2316

Exp

Cisco Catalyst 4000 series switches running CatOS 5.5.5, 6.3.5, and 7.1.2 do not always learn MAC addresses from a single initial packet, which causes unicast traffic to be broadcast across the switch and allows remote attackers to obtain sensitive network information by sniffing.

Published: 2002-12-31 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2002-2316 is rated Exploit Available (58.4/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.23%). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2002-2316

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2002-2316

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 0.57% 1.23% +0.66%
2 2026-06-14 0.49% 0.57% +0.08%
3 2025-08-21 — 0.49% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2002-2316

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:P/A:N 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:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2002-2316

Affected software / configurations for CVE-2002-2316

Vendor Product Version Raw CPE
cisco catos 5.5\(5\) cpe:2.3:o:cisco:catos:5.5\(5\):*:*:*:*:*:*:*
cisco catos 6.3\(5\) cpe:2.3:o:cisco:catos:6.3\(5\):*:*:*:*:*:*:*
cisco catos 7.1\(2\) cpe:2.3:o:cisco:catos:7.1\(2\):*:*:*:*:*:*:*

References for CVE-2002-2316

cvelogic Threat Intelligence