CVE-2021-1562: Cisco BroadWorks Application Server Information Disclosure Vulnerability

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-07-08 · updated 2026-06-17
Weakness: CWE-200

Description

A vulnerability in the XSI-Actions interface of Cisco BroadWorks Application Server could allow an authenticated, remote attacker to access sensitive information on an affected system. This vulnerability is due to improper input validation and authorization of specific commands that a user can execute within the XSI-Actions interface. An attacker could exploit this vulnerability by authenticating to an affected device and issuing a specific set of commands. A successful exploit could allow the attacker to join a Call Center instance and have calls that they do not have permissions to access distributed to them from the Call Center queue. At the time of publication, Cisco had not released updates that address this vulnerability for Cisco BroadWorks Application Server. However, firmware patches are available.

Affected products

Cisco Broadworks Application Server: from 22.0 before 22.0.2020.08; from 23.0 before 23.0.2020.08; from 24.0 before 24.0.2020.08 — fixed in 22.0.2020.08, 23.0.2020.08, 24.0.2020.08

How to fix

Upgrade to a fixed version: Cisco Broadworks Application Server 22.0.2020.08, 23.0.2020.08, 24.0.2020.08. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2021-1562 or the next vulnerability affects your stack