VULNERABILITY INTELLIGENCE

CVE-2019-1751

CVSS score8.6 HIGH

EPSS probability2.52%

CISA KEVNot currently listed

Published2019-03-28

Last modified2026-06-17

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

Description

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.

Weakness classification

psirt@cisco.com: CWE-20
nvd@nist.gov: CWE-20

Primary references

psirt@cisco.com — Third Party Advisory, VDB Entry
psirt@cisco.com — Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 — Patch, Vendor Advisory