High7.5Cisco Updated

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.

cisco-sa-bworks-xxe-uwUd7CEt Published Aug 19, 2026Updated by vendor Aug 19, 2026

CVE-2026-20320

Affected products & platforms

CiscoUnclassified

Open vendor advisory

Android app · Google Play

Monitor future Cisco CVEs from your phone.

Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 32 official vendor sources and 160+ reviewed platform categories.

Matching phone alertsOptional email delivery

Get CVE alerts See app features

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 2 hours ago·verify at source

Fixed versions

RI.2026.07

Official advisory · high-confidence parse· fetched 2 hours 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 2 hours ago·verify at source

Discussion(0)

No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.