CVE-2019-1964 HIGH

CVE-2019-1964: Cisco NX-OS Software IPv6 Denial of Service Vulnerability

Vendor Cisco
Product Cisco NX-OS Software 8.1(1)
Weakness CWE-20 · Input validation
Published August 28, 2019
Last update November 19, 2024

CVSS base score

8.6/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

What the vulnerability does

01Description

A vulnerability in the IPv6 traffic processing of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause an unexpected restart of the netstack process on an affected device. The vulnerability is due to improper validation of IPv6 traffic sent through an affected device. An attacker could exploit this vulnerability by sending a malformed IPv6 packet through an affected device. A successful exploit could allow the attacker to cause a denial of service (DoS) condition while the netstack process restarts. A sustained attack could lead to a reboot of the device.

Key dates

02Disclosure timeline

August 28, 2019 CVE published
November 19, 2024 Record updated