CVE-2023-20020

Severity: high (CVSS 8.6 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: 2023-01-20 · updated 2026-06-17
Weakness: CWE-835

Description

A vulnerability in the Device Management Servlet application of Cisco BroadWorks Application Delivery Platform and Cisco BroadWorks Xtended Services Platform could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper input validation when parsing HTTP requests. An attacker could exploit this vulnerability by sending a sustained stream of crafted requests to an affected device. A successful exploit could allow the attacker to cause all subsequent requests to be dropped, resulting in a DoS condition.

Affected products

Cisco Broadworks Application Delivery Platform Device Management: from 22.0 before 2022.11_1.273 — fixed in 2022.11_1.273
Cisco Broadworks Xtended Services Platform: from 22.0 before 23.0.1075.ap384245 — fixed in 23.0.1075.ap384245

How to fix

Upgrade to a fixed version: Cisco Broadworks Application Delivery Platform Device Management 2022.11_1.273; Cisco Broadworks Xtended Services Platform 23.0.1075.ap384245. Check the vendor advisory for mitigations.

References

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