CVE-2026-20320Cisco BroadWorks Improper Restriction of XML External Entity Reference Vulnerability
Explotación conocida — Cisco BroadWorks Improper Restriction of XML External Entity Reference Vulnerability
CISA confirmó el 10.11.2026 que esta vulnerabilidad se usa en ataques reales. Plazo para las agencias federales de EE. UU.: 24.11.2026.
Acción requerida: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bworks-xxe-uwUd7CEt ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-20320
Descripción
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.
Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.
Productos y versiones afectados
| Fabricante | Producto | Versiones | |
|---|---|---|---|
| cisco | broadworks application delivery platform | < ri.2026.07 | |
| cisco | broadworks application server | < 2026.0 | |
| cisco | broadworks profile server | < 2026.07 | |
| cisco | broadworks xtended services platform | < 2026.07 | |
| Cisco | Cisco BroadWorks | N/A |
Referencias y parches
- cisco-sa-bworks-xxe-uwUd7CEt Vendor Advisory
- https://malbearlabs.com/posts/operation-snowball-inside-an-autonomous-ai-intrusion-campaign ExploitThird Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20320 US Government Resource
Coincidencias CPE (NVD) (4)
cpe:2.3:a:cisco:broadworks_application_delivery_platform:*:*:*:*:*:*:*:*< ri.2026.07cpe:2.3:a:cisco:broadworks_application_server:*:*:*:*:release_independent:*:*:*< 2026.0cpe:2.3:a:cisco:broadworks_profile_server:*:*:*:*:release_independent:*:*:*< 2026.07cpe:2.3:a:cisco:broadworks_xtended_services_platform:*:*:*:*:release_independent:*:*:*< 2026.07