Description

Improper authorization in Microsoft Power Apps allows an unauthorized attacker to elevate privileges over a network.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "9.3",
  "pubDate": "2026-08-07T00:16:33.923Z",
  "pubdate": "2026-08-07T00:16:33.923Z",
  "executiveSummary": "An improper authorization vulnerability has been identified within Microsoft Power Apps, exposing systemic security risks related to access control enforcement. This vulnerability permits an unauthorized remote attacker to bypass standard security boundaries and achieve privilege escalation over a network connection.\nThe flaw directly impacts Microsoft Power Apps environments where access controls fail to properly validate user permissions and role assignments before executing sensitive operations or granting access to protected resources. The primary risk implication involves unauthorized actors acquiring elevated privileges, which can lead to unauthorized data access, modification of application logic, or administrative takeover within the affected application ecosystem.\nExploitation of this vulnerability requires network connectivity to the target Microsoft Power Apps instance and the ability to craft requests that interact with improperly secured components. The attack does not inherently require prior authentication or privileged credentials, allowing unauthenticated threat actors to initiate the exploit chain if network access is permitted.\nOrganizations utilizing Microsoft Power Apps must evaluate their current security configurations and apply official vendor updates or patches as soon as they become available to neutralize the authorization bypass vector and secure sensitive service endpoints against unauthorized privilege escalation attempts.",
  "technicalDetails": "The root cause of this vulnerability stems from improper authorization checks within the Microsoft Power Apps architecture. Specifically, the affected component fails to adequately verify whether an incoming request originates from an entity authorized to perform the requested action or access the targeted resource.\nThe vulnerability manifests within the authorization boundary enforcement logic, where security context validation is either omitted or improperly implemented during inter-service communication or client-server request handling. Because access control lists (ACLs) or role-based access control (RBAC) checks are insufficiently enforced, an attacker can directly invoke privileged functions or manipulate data objects that should otherwise be restricted.\nThe attack flow proceeds as follows: First, the unauthorized attacker establishes network connectivity to the vulnerable Microsoft Power Apps deployment or API endpoint. Second, the attacker formulates a crafted request designed to interact with administrative or restricted application components. Due to the lack of strict server-side authorization validation, the application processes the request without confirming the caller's privilege level. Finally, the system executes the requested operation, granting the attacker elevated privileges or unauthorized access to sensitive operational contexts.\nNetwork exposure is a critical factor, as the vulnerable components are accessible over the network, enabling remote exploitation without physical access or local host presence. Authentication and privilege requirements are bypassed entirely by the flaw, allowing unauthenticated or low-privileged network actors to execute actions reserved for higher privilege tiers.\nThe post-exploitation impact includes unauthorized privilege escalation, potential lateral movement within the application environment, unauthorized data exfiltration, and manipulation of application workflows. An attacker leveraging this vulnerability can compromise the confidentiality, integrity, and availability of resources managed by Microsoft Power Apps."
}