CVE-2026-20320
Cisco BroadWorks Improper Restriction of XML External Entity Reference Vulnerability
What is it?
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…
Official description from NVD.
What happened
CISA added CVE-2026-20320, an XML External Entity injection vulnerability in Cisco BroadWorks, to the KEV catalog. The unauthenticated flaw allows remote attackers to read sensitive configuration information from affected systems. Federal agencies must patch by November 24, 2026 per BOD 26-04 guidance.
From the Intel60 brief of Nov 10, 2026. AI-written summary: check the sources before acting.
Intel60 briefs
- HighCISA adds Cisco BroadWorks XXE to KEVNov 10, 2026