CVE-2026-20320: cisco broadworks_application_delivery_platform, cisco broadworks_application_server, cisco broadworks_profile_server

CVSS 7.5 (high) · listed as exploited by CISA since 2026-11-10 · published 2026-08-19

A vulnerability in the Open Client Interface (OCI) XML Parser of Cisco BroadWorks could allow an unauthenticated, remote attacker to read sensitive configuration information on an affected system. This vulnerability exists because XML entries are improperly parsed due to external entity resolution being allowed by default. An attacker could exploit this vulnerability by sending a crafted XML message to the Open Client Interface – Provisioning (OCI-P) service. A successful exploit could allow the attacker to view sensitive files from the filesystem with the privileges of the Cisco BroadWorks user.

Affected products (NVD): cisco broadworks_application_delivery_platform, cisco broadworks_application_server, cisco broadworks_profile_server, cisco broadworks_xtended_services_platform

Fixed in (NVD): ri.2026.07, 2026.0, 2026.07

Weakness: CWE-611

Source: NVD CVE-2026-20320

References

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bworks-xxe-uwUd7CEt
• https://malbearlabs.com/posts/operation-snowball-inside-an-autonomous-ai-intrusion-campaign
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20320

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