CVE-2020-3226 HIGH

CVE-2020-3226: Cisco IOS and IOS XE Software Session Initiation Protocol Denial of Service Vulnerability

Vendor Cisco
Product Cisco IOS 15.0(2)SG11a
Weakness CWE-20 · Input validation
Published June 3, 2020
Last update November 15, 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 Session Initiation Protocol (SIP) library of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient sanity checks on received SIP messages. An attacker could exploit this vulnerability by sending crafted SIP messages to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service condition.

Key dates

02Disclosure timeline

June 3, 2020 CVE published
November 15, 2024 Record updated