Description

Improper verification of cryptographic signature in Azure Data Factory allows an unauthorized attacker to elevate privileges over a network.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "9.3",
  "pubDate": "2026-08-20T22:17:43.070Z",
  "pubdate": "2026-08-20T22:17:43.070Z",
  "executiveSummary": "An improper verification of cryptographic signature vulnerability exists within Azure Data Factory, which can be leveraged by an unauthorized threat actor to achieve privilege escalation over a network.\nThe vulnerability affects the cryptographic validation mechanisms utilized by the service, allowing malicious entities to bypass security controls under specific operational conditions.\nSuccessful exploitation of this flaw enables an attacker with network access to elevate their privileges within the targeted environment, potentially granting unauthorized administrative or high-level access capabilities.\nThe risk implications are severe, as unauthorized privilege escalation can lead to unauthorized data access, manipulation of data pipelines, and compromise of underlying infrastructure resources managed by Azure Data Factory.\nAttack capabilities require network access to the vulnerable service endpoints and the ability to manipulate or forge cryptographic artifacts that fail proper validation checks due to the flawed implementation.\nOrganizations utilizing Azure Data Factory must implement strict network segmentation, monitor cryptographic validation failures, and apply official vendor patches or configuration updates as soon as they become available to mitigate potential exploitation vectors.",
  "technicalDetails": "The root cause of the vulnerability stems from the improper verification of cryptographic signatures within the validation routines of Azure Data Factory. Specifically, the application logic fails to cryptographically validate input signatures against trusted public keys or certificates in a rigorous manner, allowing structurally invalid or maliciously crafted cryptographic proofs to be accepted as authentic.\nThe vulnerable component resides within the trust boundary enforcement and cryptographic parsing modules responsible for validating authentication tokens, packages, or payloads processed by Azure Data Factory over the network.\nExploitation occurs over a network vector without requiring prior authentication, meaning an unprivileged or unauthorized remote attacker can interact directly with the exposed service endpoints. The attacker crafts a malicious payload containing an improperly signed or forged cryptographic artifact designed to impersonate a trusted entity or elevate operational context.\nDuring the attack flow, the attacker transmits the forged payload to the vulnerable Azure Data Factory endpoint. Because the application fails to properly verify the cryptographic signature—either due to missing signature checks, incorrect algorithm handling, or flawed trust chain validation—the service incorrectly evaluates the payload as cryptographically valid.\nUpon successful acceptance of the improperly verified artifact, the system grants the execution context or session associated with the payload elevated privileges. This allows the adversary to bypass intended access control lists and authorization boundaries.\nThe post-exploitation impact includes unauthorized privilege escalation across the network, enabling the attacker to execute administrative commands, access sensitive data pipelines, modify configurations, or pivot to interconnected resources managed within the Azure Data Factory ecosystem."
}