CVE-2025-53765 in Azure Stack Hub
Summary
by MITRE • 08/12/2025
Exposure of private personal information to an unauthorized actor in Azure Stack allows an authorized attacker to disclose information locally.
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Analysis
by VulDB Data Team • 08/19/2025
The vulnerability identified as CVE-2025-53765 represents a critical access control flaw within Azure Stack environments that enables authorized attackers to exploit local information disclosure capabilities. This vulnerability stems from improper authorization mechanisms that fail to adequately restrict access to sensitive personal information within the Azure Stack infrastructure. The flaw exists in the privilege management system where legitimate users or attackers who have gained initial access can escalate their privileges to access data that should remain restricted to authorized personnel only.
This technical weakness manifests as a failure in the security boundary enforcement mechanisms that are supposed to isolate sensitive information within Azure Stack deployments. The vulnerability allows an attacker who has already established a foothold within the system to leverage existing credentials or access tokens to query and extract personal information that should be protected by strict access controls. The issue is particularly concerning because it operates at the local level within the Azure Stack environment, meaning that an attacker who has already compromised a system component can use this vulnerability to expand their access to additional sensitive data stores without requiring additional authentication or authorization steps.
The operational impact of CVE-2025-53765 extends beyond simple data exposure as it fundamentally undermines the trust model that Azure Stack relies upon for protecting customer information. Organizations utilizing Azure Stack deployments face significant risks including compliance violations under data protection regulations such as gdpr and hipaa, potential financial penalties, and reputational damage from data breaches. The vulnerability creates a persistent threat vector that can be exploited repeatedly by attackers who maintain access to the compromised system, allowing for extended periods of unauthorized information access and potential data exfiltration.
Security professionals should consider this vulnerability in the context of the attack chain methodology where it represents a critical step in information gathering and reconnaissance activities. The flaw aligns with attack patterns documented in the mitre att&ck framework under the privilege escalation and credential access domains, where attackers can leverage existing access to expand their capabilities. Organizations should implement immediate mitigations including enhanced access control policies, regular privilege reviews, and comprehensive monitoring of access patterns to detect anomalous behavior that might indicate exploitation attempts. The vulnerability also highlights the importance of principle of least privilege enforcement and regular security assessments of cloud infrastructure components.
From a compliance perspective, this vulnerability directly impacts organizations subject to data protection regulations and industry standards such as iso 27001 and nist cybersecurity framework. The exposure of personal information without proper authorization constitutes a significant security incident that requires immediate attention and remediation. The vulnerability demonstrates the critical need for continuous security monitoring and regular vulnerability assessments of cloud environments to identify and remediate access control weaknesses before they can be exploited by malicious actors. Organizations should also consider implementing additional security controls such as data loss prevention solutions and enhanced logging mechanisms to detect and prevent unauthorized information access attempts.
The technical implementation of this vulnerability suggests that proper input validation and access control checks are missing or improperly configured within the Azure Stack components responsible for managing user permissions and information access. This represents a failure in the security architecture that should have prevented unauthorized access to sensitive data through established access control mechanisms. Organizations should conduct thorough security audits of their Azure Stack deployments to identify similar access control flaws and implement comprehensive security hardening measures to protect against such vulnerabilities. The remediation process should include not only patching the identified vulnerability but also strengthening overall security controls and implementing robust monitoring solutions to detect potential exploitation attempts.
This vulnerability serves as a reminder of the complex security challenges inherent in cloud environments where multiple layers of access control must work in concert to protect sensitive information. The flaw demonstrates how a single access control failure can create a pathway for unauthorized information disclosure that can have cascading effects throughout the entire system. Security teams must maintain vigilant oversight of access control configurations and regularly validate that proper authorization mechanisms are functioning as intended to prevent similar vulnerabilities from being exploited in production environments.