CVE Details
CVE-2026-20320
Cisco BroadWorks Improper Restriction of XML External Entity Reference Vulnerability
Published: 2026-11-10
CVSS: 7.5 HIGH
Product: Cisco BroadWorks
Due Date: 2026-11-24
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.
GitHub PoC
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No GitHub PoC data.
FIRST EPSS
EPSS estimates the probability of exploitation in the next 30 days. Higher values indicate higher likelihood of real-world exploitation.
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Show Raw Data
| Key | Remaining Key | Value |
|---|---|---|
| dataType | CVE_RECORD | |
| dataVersion | 5.2 | |
| cveMetadata > | cveId | CVE-2026-20320 |
| cveMetadata > | assignerOrgId | d1c1063e-7a18-46af-9102-31f8928bc633 |
| cveMetadata > | state | PUBLISHED |
| cveMetadata > | assignerShortName | cisco |
| cveMetadata > | dateReserved | 2025-10-08T11:59:15.411Z |
| cveMetadata > | datePublished | 2026-08-19T16:39:04.920Z |
| cveMetadata > | dateUpdated | 2026-08-19T19:14:41.602Z |
| containers > | cna > providerMetadata > orgId | d1c1063e-7a18-46af-9102-31f8928bc633 |
| containers > | cna > providerMetadata > shortName | cisco |
| containers > | cna > providerMetadata > dateUpdated | 2026-08-19T16:39:04.920Z |
| containers > | cna > descriptions > 0 > lang | en |
| containers > | cna > descriptions > 0 > value | 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. |
| containers > | cna > affected > 0 > vendor | Cisco |
| containers > | cna > affected > 0 > product | Cisco BroadWorks |
| containers > | cna > affected > 0 > versions > 0 > version | N/A |
| containers > | cna > affected > 0 > versions > 0 > status | affected |
| containers > | cna > problemTypes > 0 > descriptions > 0 > lang | en |
| containers > | cna > problemTypes > 0 > descriptions > 0 > description | Improper Restriction of XML External Entity Reference |
| containers > | cna > problemTypes > 0 > descriptions > 0 > type | cwe |
| containers > | cna > problemTypes > 0 > descriptions > 0 > cweId | CWE-611 |
| containers > | cna > references > 0 > url | https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bworks-xxe-uwUd7CEt |
| containers > | cna > references > 0 > name | cisco-sa-bworks-xxe-uwUd7CEt |
| containers > | cna > metrics > 0 > format | cvssV3_1 |
| containers > | cna > metrics > 0 > cvssV3_1 > version | 3.1 |
| containers > | cna > metrics > 0 > cvssV3_1 > vectorString | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| containers > | cna > metrics > 0 > cvssV3_1 > baseScore | 7.5 |
| containers > | cna > metrics > 0 > cvssV3_1 > baseSeverity | HIGH |
| containers > | cna > metrics > 0 > cvssV3_1 > attackVector | NETWORK |
| containers > | cna > metrics > 0 > cvssV3_1 > attackComplexity | LOW |
| containers > | cna > metrics > 0 > cvssV3_1 > privilegesRequired | NONE |
| containers > | cna > metrics > 0 > cvssV3_1 > userInteraction | NONE |
| containers > | cna > metrics > 0 > cvssV3_1 > scope | UNCHANGED |
| containers > | cna > metrics > 0 > cvssV3_1 > confidentialityImpact | HIGH |
| containers > | cna > metrics > 0 > cvssV3_1 > integrityImpact | NONE |
| containers > | cna > metrics > 0 > cvssV3_1 > availabilityImpact | NONE |
| containers > | cna > exploits > 0 > lang | en |
| containers > | cna > exploits > 0 > value | The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory. |
| containers > | cna > source > advisory | cisco-sa-bworks-xxe-uwUd7CEt |
| containers > | cna > source > discovery | EXTERNAL |
| containers > | cna > source > defects > 0 | CSCwv48590 |
| containers > | adp > 0 > metrics > 0 > other > type | ssvc |
| containers > | adp > 0 > metrics > 0 > other > content > timestamp | 2026-08-19T19:13:45.421692Z |
| containers > | adp > 0 > metrics > 0 > other > content > id | CVE-2026-20320 |
| containers > | adp > 0 > metrics > 0 > other > content > options > 0 > Exploitation | none |
| containers > | adp > 0 > metrics > 0 > other > content > options > 1 > Automatable | yes |
| containers > | adp > 0 > metrics > 0 > other > content > options > 2 > Technical Impact | partial |
| containers > | adp > 0 > metrics > 0 > other > content > role | CISA Coordinator |
| containers > | adp > 0 > metrics > 0 > other > content > version | 2.0.3 |
| containers > | adp > 0 > title | CISA ADP Vulnrichment |
| containers > | adp > 0 > providerMetadata > orgId | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| containers > | adp > 0 > providerMetadata > shortName | CISA-ADP |
| containers > | adp > 0 > providerMetadata > dateUpdated | 2026-08-19T19:14:41.602Z |