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Advisory severityHigh7.5Cisco

High [CVE-2026-20320] Cisco BroadWorks Out-of-Band Blind XML External Entity Injection Vulnerability

This high-severity Cisco advisory covers CVE-2026-20320 affecting BroadWorks.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

cisco-sa-bworks-xxe-uwUd7CEt Source published Source updated

VulniPulse record published Record updated

CVE-2026-20320
Affected products & platforms
CiscoUnclassified
Open source advisory

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Summary

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.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

Affected versions
  • Scope: This vulnerability affects the following Cisco products if they are running a vulnerable release of Cisco BroadWorks, regardless of device configuration:
  • Release Earlier than RI.2026.071 (first fixed: RI.2026.07)
  • Release Earlier than RI.2026.07 (first fixed: RI.2026.07)

Official advisory · high-confidence parse· fetched 11 days ago·verify at source

Fixed versions
  • RI.2026.07

Official advisory · high-confidence parse· fetched 11 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Upgrade to the first fixed release for your train per the Fixed Releases table in this advisory.
  • Earlier than RI.2026.071: upgrade to RI.2026.07.
  • Earlier than RI.2026.07: upgrade to RI.2026.07.
  • Earlier than RI.2026.07: upgrade to RI.2026.07.
  • Earlier than RI.2026.07: upgrade to RI.2026.07.
Workaround status
  • There are no workarounds that address this vulnerability.

Official advisory · high-confidence parse· fetched 11 days ago·verify at source

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