VULNERABILITY INTELLIGENCE

CVE-2023-20086

CVSS score8.6 HIGH
EPSS probability0.87%
CISA KEVNot currently listed
Published2023-11-01
Last modified2026-08-11
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Description

A vulnerability in ICMPv6 processing of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. This vulnerability is due to improper processing of ICMPv6 messages. An attacker could exploit this vulnerability by sending crafted ICMPv6 messages to a targeted Cisco ASA or FTD system with IPv6 enabled. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

Weakness classification

  • psirt@cisco.com: CWE-248
  • nvd@nist.gov: NVD-CWE-noinfo

Primary references