Description

Dell Command Update (DCU), versions prior to 5.7.1, contain an Improper Restriction of XML External Entity Reference vulnerability. A low privileged attacker with local access could potentially exploit this vulnerability, leading to Elevation of privileges and Server-side request forgery.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "6.5",
  "pubDate": "2026-08-19T15:17:51.893Z",
  "pubdate": "2026-08-19T15:17:51.893Z",
  "executiveSummary": "Dell Command Update (DCU) versions prior to 5.7.1 contain an Improper Restriction of XML External Entity Reference vulnerability. This security flaw enables a low-privileged local attacker to execute arbitrary system commands or interact with internal and external network resources via Server-Side Request Forgery (SSRF), ultimately resulting in an Elevation of Privileges. The risk implication is significant as local users can abuse the application's XML parsing mechanisms to compromise confidentiality, integrity, and availability of the host system. Successful exploitation requires local access to the target machine and low-privileged execution capabilities, allowing an adversary to manipulate XML input processed by the vulnerable software component.",
  "technicalDetails": "The root cause of the vulnerability stems from improper restriction of XML External Entity (XXE) references within the XML parsing implementation of Dell Command Update (DCU) prior to version 5.7.1. When the application parses untrusted or maliciously crafted XML data without adequately disabling external entity resolution, the underlying XML parser processes references to external URIs. The affected component is the internal XML processing module utilized by DCU for configuration or update manifest parsing. Exploitation occurs when a low-privileged local attacker crafts a malicious XML payload containing external entity definitions. Upon processing this payload, the parser attempts to resolve the external references, which can force the application to disclose sensitive local files, interact with local or remote network services via Server-Side Request Forgery (SSRF), or exhaust system resources resulting in denial of service. The attack flow involves the local attacker placing or supplying the malformed XML file to the application context where it is subsequently parsed with elevated privileges. Because the application may run with higher privileges than the initiating user, the successful resolution of external entities and potential SSRF interactions facilitate an Elevation of Privileges on the host system. Network exposure is primarily local, requiring local access authentication, but the SSRF vector allows outbound connections to arbitrary network destinations depending on the entity URI schema invoked."
}