CVE-2026-20320CWE-611xxe

CVE-2026-20320

High · published August 19, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
41.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00495 · 41.6th percentile
Weakness
CWE-611 · Improper Restriction of XML External Entity Reference
Published
2026-08-19T21:18Z
References (1)
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bworks-xxe-uwUd7CEt · [email protected]
EPSS history
Timeline
  • 19 AUG 16:39Z
    A vulnerability in the Open Client Interface (OCI) XML Parser of Cisco BroadWorks could allow an unauthenticated, remote attacker to read sensitive…
    cvelistv5