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Vulnerability record · CVE-2020-3519 · published 26 August 2020

CVE-2020-3519: Cisco data center network manager improper input validation vulnerability

Cisco · Data Center Network Manager

A vulnerability in a specific REST API method of Cisco Data Center Network Manager (DCNM) Software could allow an authenticated, remote attacker to conduct a path traversal attack on an affected device. The vulnerability is due to insufficient validation of user-supplied input to the API. An attacker could exploit this vulnerability by sending a crafted request to the API. A successful exploit could allow the attacker to overwrite arbitrary files on the affected device.

8.1 CVSS 3.1 High EPSS 0.97% · top 39.2% CWE-20 · Improper input validation
8.1CVSS 3.1 base score, v2 5.5
0.97%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A vulnerability in a specific REST API method of Cisco Data Center Network Manager (DCNM) Software could allow an authenticated, remote attacker to conduct a path traversal attack on an affected device. The vulnerability is due to insufficient validation of user-supplied input to the API. An attacker could exploit this vulnerability by sending a crafted request to the API. A successful exploit could allow the attacker to overwrite arbitrary files on the affected device.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dcnm-patrav-pW9RkhyW Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dcnm-patrav-pW9RkhyW Vendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-3519), CISA KEV, FIRST EPSS (scores of 2026-10-10). This page is refreshed as NVD updates the record.