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VULNERABILITIES

CVE-2021-1614 Details

Description

A vulnerability in the Multiprotocol Label Switching (MPLS) packet handling function of Cisco SD-WAN Software could allow an unauthenticated, remote attacker to gain access to information stored in MPLS buffer memory. This vulnerability is due to insufficient handling of malformed MPLS packets that are processed by a device that is running Cisco SD-WAN Software. An attacker could exploit this vulnerability by sending a crafted MPLS packet to an affected device that is running Cisco SD-WAN Software or Cisco SD-WAN vManage Software. A successful exploit could allow the attacker to gain unauthorized access to sensitive information.

Metrics

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdw-mpls-infodisclos-MSSRFkZq CVEPatchVendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdw-mpls-infodisclos-MSSRFkZq [email protected]PatchVendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
NVD-CWE-OtherWeakness Not in a Standard CWE Category[email protected]
CWE-126Buffer Over-read[email protected]

Affected Products

ProductVersions
cisco sd-wan
>= 18.4.0, < 18.4.6
>= 19.2.0, < 19.2.3
>= 20.3, < 20.3.2
>= 20.4, < 20.4.1
>= 20.5, < 20.5.1

CPE

  • cpe:2.3:a:cisco:sd-wan:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

6 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-1614
NVD Published Date:
Jul 22, 2021
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]