What is CVE-2021-1486?

CVE-2021-1486 is a vulnerability in Cisco SD-WAN vManage Software that could allow an unauthenticated remote attacker to enumerate user accounts.

What is the severity of CVE-2021-1486?

The severity of CVE-2021-1486 is medium with a CVSS score of 5.3.

How does CVE-2021-1486 work?

CVE-2021-1486 is due to the improper handling of HTTP headers in Cisco SD-WAN vManage Software. An attacker could exploit this vulnerability by sending authenticated requests to an affected system.

Which software versions are affected by CVE-2021-1486?

Cisco Catalyst SD-WAN Manager versions 20.4 and 20.4.1, as well as Cisco SD-WAN vManage version up to 20.3.3, are affected by CVE-2021-1486.

How can I fix CVE-2021-1486?

To fix CVE-2021-1486, it is recommended to upgrade to a fixed software version provided by Cisco.

Vulnerability/
CVE-2021-1486

medium

5.3

CWE

203

6/5/2021

8/11/2024

CVE-2021-1486: Cisco SD-WAN vManage HTTP Authentication User Enumeration Vulnerability

First published: Thu May 06 2021(Updated: )

A vulnerability in Cisco SD-WAN vManage Software could allow an unauthenticated, remote attacker to enumerate user accounts. This vulnerability is due to the improper handling of HTTP headers. An attacker could exploit this vulnerability by sending authenticated requests to an affected system. A successful exploit could allow the attacker to compare the HTTP responses that are returned by the affected system to determine which accounts are valid user accounts.

Credit: ykramarz@cisco.com ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Cisco Catalyst SD-WAN Manager	>=20.4<20.4.1
Cisco SD-WAN vManage	<20.3.3

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Reference Links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vmanage-enumeration-64eNnDKy

Frequently Asked Questions

What is CVE-2021-1486?
CVE-2021-1486 is a vulnerability in Cisco SD-WAN vManage Software that could allow an unauthenticated remote attacker to enumerate user accounts.
What is the severity of CVE-2021-1486?
The severity of CVE-2021-1486 is medium with a CVSS score of 5.3.
How does CVE-2021-1486 work?
CVE-2021-1486 is due to the improper handling of HTTP headers in Cisco SD-WAN vManage Software. An attacker could exploit this vulnerability by sending authenticated requests to an affected system.
Which software versions are affected by CVE-2021-1486?
Cisco Catalyst SD-WAN Manager versions 20.4 and 20.4.1, as well as Cisco SD-WAN vManage version up to 20.3.3, are affected by CVE-2021-1486.
How can I fix CVE-2021-1486?
To fix CVE-2021-1486, it is recommended to upgrade to a fixed software version provided by Cisco.

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