CVE-2026-4522 in Passwordless
Summary
by MITRE • 06/25/2026
Missing authentication for critical function vulnerability in HYPR Passwordless on Windows allows Credentials Interception.
This issue affects HYPR Passwordless: before 11.1.1.
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Analysis
by VulDB Data Team • 06/25/2026
This vulnerability represents a critical authentication flaw in HYPR Passwordless for Windows implementations that directly enables credential interception attacks. The missing authentication for critical function weakness creates an exploitable pathway where adversaries can bypass normal authentication mechanisms to access sensitive systems and data. This vulnerability specifically targets the passwordless authentication infrastructure, which is designed to eliminate traditional password-based authentication but inadvertently introduces new attack vectors when proper authentication controls are omitted for critical functions. The flaw exists in versions prior to 11.1.1 of HYPR Passwordless, indicating that this was a recognized security gap that required remediation through version updates.
The technical nature of this vulnerability stems from insufficient validation of user credentials during critical authentication processes within the passwordless framework. When authentication is missing for functions that should require verification, attackers can intercept and manipulate credential flows without proper authorization checks. This type of vulnerability typically falls under CWE-287 which addresses improper authentication issues in software systems. The impact extends beyond simple credential theft to potentially enabling full system compromise when combined with other attack vectors. The passwordless architecture's reliance on alternative authentication methods creates unique challenges where the absence of traditional password mechanisms can be exploited if proper validation controls are not implemented for critical functions.
Operationally, this vulnerability exposes organizations using HYPR Passwordless to significant risk of unauthorized access and data breaches. Attackers can intercept credentials during transmission or manipulation phases, potentially gaining access to protected systems, applications, and sensitive information. The implications are particularly severe in enterprise environments where passwordless solutions are often deployed for enhanced security but become vulnerable due to this missing authentication control. Organizations may experience unauthorized access to critical infrastructure, potential data exfiltration, and disruption of legitimate business operations. The credential interception capability allows attackers to leverage stolen authentication tokens or credentials across multiple systems if proper session management and validation controls are absent. This vulnerability directly impacts the principle of least privilege and can enable lateral movement within networks where passwordless systems are implemented.
Mitigation strategies should focus on immediate deployment of HYPR Passwordless version 11.1.1 or later, which contains the necessary authentication fixes for critical functions. Organizations must conduct comprehensive security assessments of their passwordless implementations to identify any additional authentication gaps that may exist beyond this specific vulnerability. Network segmentation and monitoring controls should be enhanced to detect unusual credential access patterns and interception attempts. The implementation of additional authentication layers such as multi-factor authentication or hardware security modules can provide defense-in-depth against credential interception attacks. Security teams should also review their incident response procedures to ensure they can effectively respond to credential interception events within passwordless environments. Regular vulnerability assessments and penetration testing of passwordless systems are essential to identify similar gaps in authentication controls that could enable similar exploitation patterns. Organizations should also consider implementing certificate-based authentication or other strong authentication mechanisms that provide additional protection against credential interception attacks where traditional password controls have been eliminated.