CVE-2026-20320 XML external entity in Cisco BroadWorks
Unauthenticated remote attackers can read sensitive configuration files via XML external entity injection in the OCI-P service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-20320?
CVE-2026-20320 is a high-severity vulnerability in Cisco BroadWorks, published on 19 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-611
Which versions are affected by CVE-2026-20320?
How do I fix CVE-2026-20320?
No fix has been published for CVE-2026-20320 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-20320 being exploited?
There is no known exploitation of CVE-2026-20320 in the wild and no public exploit code.
Sources
Also known as GHSA-9w8j-fg77-whw7.