CVE-2019-1751 HIGH

CVE-2019-1751: Cisco IOS Software NAT64 Denial of Service Vulnerability

Vendor Cisco
Product Cisco IOS Software
Weakness CWE-20 · Input validation
Published March 28, 2019
Last update November 19, 2024
View on NVD All CVEs

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 Network Address Translation 64 (NAT64) functions of Cisco IOS Software could allow an unauthenticated, remote attacker to cause either an interface queue wedge or a device reload. The vulnerability is due to the incorrect handling of certain IPv4 packet streams that are sent through the device. An attacker could exploit this vulnerability by sending specific IPv4 packet streams through the device. An exploit could allow the attacker to either cause an interface queue wedge or a device reload, resulting in a denial of service (DoS) condition.

Key dates

02Disclosure timeline

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