CVE-2025-64113: Emby Server allows attackers to gain administrative server access without preconditions
Impact
This vulnerability affects all Emby Server versions - beta and stable up to the specified versions. It allows an attacker to gain full administrative access to an Emby Server (for Emby Server administration, not at the OS level,). Other than network access, no specific preconditions need to be fulfilled for a server to be vulnerable.
Patches
Quick Fix
A quick fix will be rolled out via an update to one of the default-included Emby Server plugins. This way is chosen because many users are updating their servers manually while plugin updates are typically configured to be applied automatically. This allows to get a patch deployed to a large amount of servers within a single day.
Server Patches
Patched versions for both, Emby Server stable and Emby Server beta are available now.
All Emby Server owners are strongly encouraged to apply those updates as soon as possible.
Workarounds
> [!NOTE] > These workarounds are OBSOLETE now. Please update Emby Server instead!
As and immediate remedy, it is possible to set restricted file system permissions on the passwordreset.txt file in the configuration folder of Emby Server. If it doesn't exist, users can create the file themselves or just call the ForgotPassword API once, which will create the file.
On Windows, users can set DENY permissions for "Authenticated users" and on Linux, permissions can be set via sudo chmod 444 passwordreset.txt. This will make the API request fail, which completely eliminates the vulnerability.
Other sources
Emby Server is a user-installable home media server. Versions below 4.9.1.81 allow an attacker to gain full administrative access to an Emby Server (for Emby Server administration, not at the OS level). Other than network access, no specific preconditions need to be fulfilled for a server to be vulnerable. This issue is fixed in version 4.9.1.81.
— MITRE
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-64113?
CVE-2025-64113 has a high severity rating due to its potential for allowing unauthorized administrative access to Emby Server.
How do I fix CVE-2025-64113?
To fix CVE-2025-64113, upgrade your Emby Server to version 4.9.1.81 or later.
Which versions of Emby Server are affected by CVE-2025-64113?
CVE-2025-64113 affects all Emby Server versions up to and including 4.9.1.80.
Can CVE-2025-64113 be exploited without network access?
No, CVE-2025-64113 requires network access to exploit the vulnerability.
What type of access does CVE-2025-64113 grant to attackers?
CVE-2025-64113 allows attackers to gain full administrative access to the Emby Server, but not at the operating system level.