Authentication Bypass in Emby Server by Emby

CVE-2025-64113

What is CVE-2025-64113?

CVE-2025-64113 is a security vulnerability found in Emby Server, a popular user-installable home media server. This vulnerability allows attackers to bypass authentication mechanisms, granting them full administrative access to the Emby Server environment. Such unauthorized access can enable malicious actors to manipulate server settings, access sensitive media content, and potentially disrupt services provided to legitimate users. The flaw exists in versions prior to 4.9.1.81, and it does not require any specific prerequisites for exploitation, making it particularly concerning for organizations using affected versions of the software.

Potential Impact of CVE-2025-64113

1. Unauthorized Access and Control: The most immediate impact of this vulnerability is the potential for unauthorized users to gain full administrative rights. This can lead to significant changes in server configuration, including altering access controls, which may allow further exploitation of the system.

2. Data Integrity Compromise: With administrative access, attackers could manipulate or corrupt media files or metadata stored on the server. This manipulation not only risks the integrity of data but may also affect user trust and the overall service reliability.

3. Service Disruption: Attackers may leverage their access to disable the server or disrupt media streaming services. Such interruptions can negatively impact users and, if exploited against commercial entities, may lead to financial losses and reputational damage.

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