← Vulnerability feed

Vulnerability record · CVE-2020-3523 · published 26 August 2020

CVE-2020-3523: Cisco data center network manager cross-site scripting vulnerability

Cisco · Data Center Network Manager

A vulnerability in the web-based management interface of Cisco Data Center Network Manager (DCNM) Software could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. The vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by persuading a user to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface or access sensitive, browser-based information.

5.4 CVSS 3.1 Medium EPSS 0.62% · top 52.1% CWE-79 · Cross-site scripting
5.4CVSS 3.1 base score, v2 3.5
0.62%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 the web-based management interface of Cisco Data Center Network Manager (DCNM) Software could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. The vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by persuading a user to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface or access sensitive, browser-based information.

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

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-xss-5TdMJRB3 Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dcnm-xss-5TdMJRB3 Vendor Advisory

Track CVE-2020-3523 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

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

10.0CVE-2021-44228Apache Log4j2 JNDI lookup remote code executionApache Log4j2 versions 2.0-beta9 through 2.15.0 (excluding 2.12.2, 2.12.3, and 2.3.1) do not protect against attacker-controlled LDAP and other JNDI …KEVEPSS 100%analysed7.5CVE-2023-44487HTTP/2 Rapid Reset stream cancellation denial of serviceThe HTTP/2 protocol permits a client to cancel many streams quickly, and the server's handling of those resets consumes disproportionate resources. T…KEVEPSS 100%analysed9.8CVE-2020-3382Cisco data center network manager hard-coded credentials vulnerabilityA vulnerability in the REST API of Cisco Data Center Network Manager (DCNM) could allow an unauthenticated, remote attacker to bypass authentication …EPSS 2.3%9.8CVE-2020-3376Cisco data center network manager missing authentication for critical function vulnerabilityA vulnerability in the Device Manager application of Cisco Data Center Network Manager (DCNM) could allow an unauthenticated, remote attacker to bypa…EPSS 1.2%9.8CVE-2019-15975Cisco DCNM authentication bypass via hard-coded credentialsCisco Data Center Network Manager contains multiple authentication mechanism flaws, categorized as hard-coded credentials (CWE-798), that let an unau…EPSS 96%analysed9.8CVE-2019-15976Cisco DCNM authentication bypass via hard-coded credentialsCisco Data Center Network Manager contains multiple authentication mechanism flaws, mapped to CWE-798 hard-coded credentials, that let an unauthentic…EPSS 93%analysed9.8CVE-2019-1619Cisco DCNM web interface authentication bypass via improper session managementCisco Data Center Network Manager (DCNM) has an authentication bypass in its web-based management interface caused by improper session management. An…EPSS 83%analysed9.8CVE-2019-1620Cisco DCNM web interface unauthenticated arbitrary file upload to root RCECisco Data Center Network Manager (DCNM) has incorrect permission settings in its web-based management interface that allow an unauthenticated, remot…EPSS 84%analysed

Source: NIST National Vulnerability Database (record CVE-2020-3523), CISA KEV, FIRST EPSS (scores of 2026-10-01). This page is refreshed as NVD updates the record.