CVE WatchNov 10, 2026

CVE-2026-20320

Cisco BroadWorks Improper Restriction of XML External Entity Reference Vulnerability

CVSS

7.5

High

EPSS

0.4%

p33

KEV

YES

Nov 10, 2026

Exploit Today

0-100

Published: Aug 19, 2026 · Last modified: Nov 10, 2026 · CWE-611

EPSS · 30d

0.4%EPSS · 30 days0.5%

2026-10-132026-11-10

KEV catalog record

Product

Cisco / BroadWorks

Vulnerability

Cisco BroadWorks Improper Restriction of XML External Entity Reference Vulnerability

Added to KEV

Nov 10, 2026

Remediate by

Nov 24, 2026

Known ransomware use

Summary description

Cisco BroadWorks contains an improper restriction of XML external entity reference vulnerability that could allow an unauthenticated, remote attacker to read sensitive configuration information on an affected system.

Required action

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Notes

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bworks-xxe-uwUd7CEt ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-20320

Technical 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.

Official references

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

CVE-2026-1260623.7 LOW

—

——0Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.5, on JRuby, applications that parse untrusted XML with DTDLOAD, DTDVALID, or NOENT can have the NONET restriction bypassed when an external DTD or entity uses a short-form IPv4 host or uses absolute paths resolved against a network URL. The resolver can treat these identifiers as local and send a network request, potentially enabling server-side request forgery. CRuby and default parse options are not affected. This issue is fixed in version 1.19.5.6h CVE-2026-1229856.1 MED

—

——0Improper restriction of xml external entity reference in Microsoft PowerShell allows an unauthorized attacker to disclose information over a network.7h CVE-2026-1221966.5 MED

—

——0Improper restriction of xml external entity reference in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to disclose information over a network.7h CVE-2026-1097989.1 CRI

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——6SAP BusinessObjects Business Intelligence Platform (Web Intelligence) does not properly restrict external entity resolution when processing OLAP connection requests. An authenticated attacker could exploit this vulnerability to access restricted resources, enabling them to read sensitive files on the server and reach internal systems that are not otherwise exposed, impacting resources beyond the vulnerable component, resulting in a high impact on confidentiality and a low impact on both integrity and availability.6h CVE-2026-118468—

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——5XML parsers process attacker-influenced update manifests or network responses with external entity resolution enabled, potentially allowing XML External Entity (XXE) attacks.2d CVE-2026-120761—

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——5Improper Restriction of XML External Entity Reference vulnerability in Apache Axis2/Java. When a client built an AxisService from a WSDL URL, through ServiceClient or AxisService.createClientSideAxisService, wsdl4j import resolution was enabled and the documents named by wsdl:import and xsd:import were parsed by wsdl4j's own XML parser, which processes DOCTYPE declarations and external entities. An attacker who controls a WSDL, or a document it imports, could therefore read local files or make the JVM issue network requests. This issue affects Apache Axis2/Java: through 2.0.1. Users are recommended to upgrade to version 2.0.2, which fixes the issue.2d