A vulnerability in the CDP processing feature of Cisco ISE could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition of the CDP process on an affected device. This vulnerability is due to insufficient bounds checking when an affected device processes CDP traffic. An attacker could exploit this vulnerability by sending crafted CDP traffic to the device. A successful exploit could cause the CDP process to crash, impacting neighbor discovery and the ability of Cisco ISE to determine the reachability of remote devices. After a crash, the CDP process must be manually restarted using the cdp enable command in interface configuration mode.
History

Thu, 12 Jun 2025 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2023-11-01T16:58:11.623Z

Updated: 2025-06-12T14:37:44.323Z

Reserved: 2022-10-27T18:47:50.367Z

Link: CVE-2023-20213

cve-icon Vulnrichment

Updated: 2024-08-02T09:05:35.481Z

cve-icon NVD

Status : Modified

Published: 2023-11-01T17:15:11.500

Modified: 2024-11-21T07:40:54.080

Link: CVE-2023-20213

cve-icon Redhat

No data.