Description

Improper removal of sensitive information before storage or transfer in .NET allows an unauthorized attacker to disclose information over a network.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "5.9",
  "pubDate": "2026-08-11T17:18:44.250Z",
  "pubdate": "2026-08-11T17:18:44.250Z",
  "executiveSummary": "This vulnerability involves the improper removal of sensitive information prior to storage or transfer within the .NET framework, categorized as an information disclosure flaw.\nAn unauthorized remote attacker can exploit this weakness to intercept, access, or harvest sensitive data transmitted or stored across a network, compromising confidentiality.\nThe affected systems include applications developed using .NET where internal data sanitization routines fail to purge critical parameters before persistence or transmission.\nThe risk implications are severe, potentially leading to unauthorized exposure of credentials, personally identifiable information (PII), or proprietary internal data.\nAttacker capabilities include passive network sniffing or active interception to capture unredacted sensitive payloads, provided they have network positioning to monitor or capture the data stream.\nNo complex exploitation requirements are explicitly mentioned beyond network access to the target data transmission channel or storage medium where the improperly sanitized information resides.",
  "technicalDetails": "The root cause of the vulnerability stems from inadequate data sanitization and omission of proper cryptographic or redaction mechanisms within .NET components responsible for serializing, storing, or transferring state and data objects.\nWhen sensitive attributes, internal tokens, or confidential identifiers are processed by vulnerable routines, they are inadvertently persisted or transmitted in plaintext or insufficiently obfuscated formats.\nThe vulnerable component resides within the data handling, serialization, or transport layers of the affected .NET application scope, where sensitive fields are not explicitly stripped or masked prior to downstream operations.\nExploitation occurs when an unauthorized attacker leverages network exposure to intercept transit streams or access underlying storage repositories containing the unredacted artifacts.\nThe attack flow typically proceeds as follows: First, the application generates a data structure containing sensitive parameters destined for storage or network transmission. Second, the vulnerable .NET serialization or transfer mechanism fails to strip out the sensitive attributes. Third, the data is committed to storage or dispatched across the network boundary. Finally, an unauthorized adversary captures the data stream or storage artifact, extracting the unredacted sensitive information to achieve information disclosure.\nAuthentication and privilege requirements depend on the specific endpoint or storage boundary, but the vulnerability inherently allows unauthorized entities to bypass intended confidentiality controls due to the presence of residual sensitive data.\nPost-exploitation impact includes the potential chaining of the disclosed information to facilitate further unauthorized access, privilege escalation, or lateral movement within the network infrastructure."
}