CVE-2020-26066: Cisco SD-WAN vManage Software XML External Entity Vulnerability

Published Nov 18, 2024

Updated

A vulnerability in the web UI of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to gain read and write access to information that is stored on an affected system. The vulnerability is due to improper handling of XML External Entity (XXE) entries when parsing certain XML files. An attacker could exploit this vulnerability by persuading a user to import a crafted XML file with malicious entries. A successful exploit could allow the attacker to read and write files within the affected application.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

Affected Software

46 affected components

Cisco SD-WAN vManage Software

Cisco Catalyst SD-WAN Manager=17.2.4

Cisco Catalyst SD-WAN Manager=17.2.5

Cisco Catalyst SD-WAN Manager=17.2.6

Cisco Catalyst SD-WAN Manager=17.2.7

Cisco Catalyst SD-WAN Manager=17.2.8

Cisco Catalyst SD-WAN Manager=17.2.9

Cisco Catalyst SD-WAN Manager=17.2.10

Cisco Catalyst SD-WAN Manager=18.2.0

Cisco Catalyst SD-WAN Manager=18.3.0

Cisco Catalyst SD-WAN Manager=18.3.1

Cisco Catalyst SD-WAN Manager=18.3.1.1

Cisco Catalyst SD-WAN Manager=18.3.3

Cisco Catalyst SD-WAN Manager=18.3.3.1

Cisco Catalyst SD-WAN Manager=18.3.4

Cisco Catalyst SD-WAN Manager=18.3.5

Cisco Catalyst SD-WAN Manager=18.3.6

Cisco Catalyst SD-WAN Manager=18.3.6.1

Cisco Catalyst SD-WAN Manager=18.3.7

Cisco Catalyst SD-WAN Manager=18.3.8

Cisco Catalyst SD-WAN Manager=18.4.0

Cisco Catalyst SD-WAN Manager=18.4.0.1

Cisco Catalyst SD-WAN Manager=18.4.1

Cisco Catalyst SD-WAN Manager=18.4.3

Cisco Catalyst SD-WAN Manager=18.4.4

Cisco Catalyst SD-WAN Manager=18.4.5

Cisco Catalyst SD-WAN Manager=18.4.302

Cisco Catalyst SD-WAN Manager=18.4.303

Cisco Catalyst SD-WAN Manager=18.4.501_es

Cisco Catalyst SD-WAN Manager=19.0.0

Cisco Catalyst SD-WAN Manager=19.0.1a

Cisco Catalyst SD-WAN Manager=19.1.0

Cisco Catalyst SD-WAN Manager=19.2.0

Cisco Catalyst SD-WAN Manager=19.2.1

Cisco Catalyst SD-WAN Manager=19.2.2

Cisco Catalyst SD-WAN Manager=19.2.3

Cisco Catalyst SD-WAN Manager=19.2.31

Cisco Catalyst SD-WAN Manager=19.2.097

Cisco Catalyst SD-WAN Manager=19.2.098

Cisco Catalyst SD-WAN Manager=19.2.099

Cisco Catalyst SD-WAN Manager=19.2.929

Cisco Catalyst SD-WAN Manager=19.3.0

Cisco Catalyst SD-WAN Manager=20.1.1

Cisco Catalyst SD-WAN Manager=20.1.1.1

Cisco Catalyst SD-WAN Manager=20.1.12

Cisco Catalyst SD-WAN Manager=20.3.1

Event History

Nov 18, 2024

CVE Published

via MITRE·04:23 PM

Data Sourced

via MITRE·04:23 PM

DescriptionSeverityWeakness

Data Sourced

via NVD·05:15 PM

DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

What is the severity of CVE-2020-26066?

CVE-2020-26066 has a CVSS score indicating it is a high-severity vulnerability.

How do I fix CVE-2020-26066?

To fix CVE-2020-26066, apply the latest patches provided by Cisco for the SD-WAN vManage Software.

Who is affected by CVE-2020-26066?

Any organization using Cisco SD-WAN vManage Software is affected by CVE-2020-26066.

What type of attack does CVE-2020-26066 facilitate?

CVE-2020-26066 allows an authenticated, remote attacker to gain unauthorized read and write access to sensitive data.

What causes CVE-2020-26066?

CVE-2020-26066 is caused by improper handling of XML External Entity (XXE) entries in the Cisco SD-WAN vManage Software.