CVE-2026-50352 in Windows
Summary
by MITRE • 07/14/2026
Exposure of sensitive information to an unauthorized actor in Windows Cryptographic Services allows an authorized attacker to disclose information locally.
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Analysis
by VulDB Data Team • 07/15/2026
This vulnerability represents a critical information disclosure flaw within the Windows Cryptographic Services component that enables local attackers with authorized access to potentially extract sensitive cryptographic data. The issue stems from inadequate access controls and improper privilege separation within the cryptographic service architecture, allowing authenticated users to bypass normal security boundaries and access confidential information that should remain protected. Such exposures can compromise the integrity of cryptographic operations and undermine the trust model that Windows relies upon for secure communications and data protection.
The technical root cause involves insufficient validation mechanisms within the cryptographic service interfaces that fail to properly enforce access restrictions based on user privileges and security contexts. When an attacker possesses legitimate authentication credentials, they can exploit this weakness to traverse normal security boundaries and gain unauthorized access to sensitive cryptographic material including private keys, encryption parameters, and credential stores. This type of vulnerability aligns with CWE-284 which addresses improper access control and represents a classic example of privilege escalation through inadequate authorization checks in system services.
The operational impact extends beyond simple information disclosure as this weakness can enable more sophisticated attacks including credential theft, key compromise, and potential elevation of privileges within the affected system. Attackers may leverage this vulnerability to extract encryption keys used for protecting sensitive data, potentially enabling them to decrypt confidential information or impersonate legitimate users. The local nature of this exposure means that attackers do not require network access or external attack vectors, making it particularly dangerous in environments where insider threats exist or where initial compromise occurs through other attack vectors.
Organizations should implement immediate mitigations including applying relevant security patches from Microsoft, reviewing and tightening access controls for cryptographic services, and conducting comprehensive audits of cryptographic key management practices. System administrators should ensure proper monitoring and logging of cryptographic service access patterns to detect anomalous behavior that might indicate exploitation attempts. Additionally, implementing principle of least privilege configurations and regular security assessments can help reduce the attack surface and prevent unauthorized access to sensitive cryptographic resources. This vulnerability demonstrates the importance of maintaining robust access controls even within trusted system components and highlights the need for continuous security validation of critical infrastructure services.
The threat landscape surrounding cryptographic service vulnerabilities aligns with ATT&CK technique T1552 which covers "Unsecured Credentials" and represents a common vector for attackers seeking to compromise system security through information gathering and privilege escalation. Organizations must consider this vulnerability within their broader security posture and ensure that cryptographic services receive the same level of protection as other critical system components, implementing defense-in-depth strategies that include network segmentation, access logging, and continuous monitoring to detect potential exploitation attempts.