How to fix CVE-2025-20211?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Is Cisco affected by CVE-2025-20211?

CVE-2025-20211 presents moderate security risk, a cross-site scripting vulnerability rated CVSS 6.1. Attackers could inject scripts to steal sessions or perform actions as authenticated users. Organizations should apply vendor updates when available and monitor for exploitation.

CVE-2025-20211

MEDIUM

2025-02-19 [email protected]

6.1

CVSS 3.1

CVSS Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:27 vuln.today

CVE Published

Feb 19, 2025 - 16:15 nvd

MEDIUM 6.1

Description

A vulnerability in the web-based management interface of Cisco BroadWorks Application Delivery Platform could allow an unauthenticated, remote attacker to conduct a cross-site scripting attack against a user of the interface. This 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 of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

Analysis

A vulnerability in the web-based management interface of Cisco BroadWorks Application Delivery Platform could allow an unauthenticated, remote attacker to conduct a cross-site scripting attack. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical Context

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. A vulnerability in the web-based management interface of Cisco BroadWorks Application Delivery Platform could allow an unauthenticated, remote attacker to conduct a cross-site scripting attack against a user of the interface. This 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 of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

Affected Products

See vendor advisory for affected versions.

Remediation

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.1

CVSS: +30

POC: 0

CVE-2025-20211 vulnerability details – vuln.today

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CVE-2025-20211

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CVE-2025-20211

CVSS Vector

Lifecycle Timeline

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Description

Analysis

Technical Context

Affected Products

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