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VULNERABILITIES

CVE-2026-20320 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://malbearlabs.com/posts/operation-snowball-inside-an-autonomous-ai-intrusion-campaign CISA-ADPExploitThird Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20320 CISA-ADPUS Government Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bworks-xxe-uwUd7CEt [email protected]Vendor Advisory

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

Vulnerability NameDate AddedDue DateRequired Action
Cisco BroadWorks Improper Restriction of XML External Entity Reference VulnerabilityNov 10, 2026Nov 24, 2026Apply 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.

Weakness Enumeration

CWE-IDCWE NameSource
CWE-611Improper Restriction of XML External Entity Reference[email protected]

Affected Products

ProductVersions
cisco broadworks application delivery platform
< ri.2026.07

CPE

  • cpe:2.3:a:cisco:broadworks_application_delivery_platform:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
cisco broadworks application server
< 2026.0

CPE

  • cpe:2.3:a:cisco:broadworks_application_server:*:*:*:*:release_independent:*:*:*

Remediation

  • No remediation found in references.
cisco broadworks profile server
< 2026.07

CPE

  • cpe:2.3:a:cisco:broadworks_profile_server:*:*:*:*:release_independent:*:*:*

Remediation

  • No remediation found in references.
cisco broadworks xtended services platform
< 2026.07

CPE

  • cpe:2.3:a:cisco:broadworks_xtended_services_platform:*:*:*:*:release_independent:*:*:*

Remediation

  • No remediation found in references.

Change History

6 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-20320
NVD Published Date:
Aug 19, 2026
NVD Last Modified:
Nov 10, 2026
Source:
[email protected]
CVE-2026-20320 Details - Not Deferred