CVE-2021-1279: Cisco SD-WAN Denial of Service Vulnerabilities
Multiple vulnerabilities in Cisco SD-WAN products could allow an unauthenticated, remote attacker to execute denial of service (DoS) attacks against an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
Affected Software
Event History
Frequently Asked Questions
What is CVE-2021-1279?
CVE-2021-1279 is a vulnerability in Cisco SD-WAN products that allows an unauthenticated remote attacker to execute denial of service (DoS) attacks.
What is the severity of CVE-2021-1279?
The severity of CVE-2021-1279 is high, with a severity value of 8.6.
Which Cisco SD-WAN products are affected by CVE-2021-1279?
Cisco Ios Xe Sd-wan and Cisco Sd-wan Firmware versions 18.3.5, 18.3.8, 18.4.1, 18.4.4, 18.4.5, 19.2.0, 19.2.1, 19.2.2, 19.2.99, and 20.1.0 are affected.
How can an attacker exploit CVE-2021-1279?
An attacker can exploit CVE-2021-1279 by sending specially crafted packets to the vulnerable device, causing it to crash and result in a denial of service condition.
Is there a fix available for CVE-2021-1279?
Yes, Cisco has released software updates to address the vulnerability. It is recommended to upgrade to the latest available version.