AUGUST 4, 2026
Live Feed
Back to database
Case File

CVE-2020-3231

MEDIUM · CVSS 4.7 EPSS 0.45% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2020-06-03 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 4.7. It affects Cisco. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2020-3231
Severity
MEDIUM
CVSS
4.7
EPSS
0.45%
Cisco

Original NVD Description

A vulnerability in the 802.1X feature of Cisco Catalyst 2960-L Series Switches and Cisco Catalyst CDB-8P Switches could allow an unauthenticated, adjacent attacker to forward broadcast traffic before being authenticated on the port. The vulnerability exists because broadcast traffic that is received on the 802.1X-enabled port is mishandled. An attacker could exploit this vulnerability by sending broadcast traffic on the port before being authenticated. A successful exploit could allow the attacker to send and receive broadcast traffic on the 802.1X-enabled port before authentication.

Related CVEs

Other vulnerabilities affecting the same vendor(s)