A vulnerability was detected in ZKTeco BioTime up to 9.0.3/9.0.4/9.5.2. This affects an unknown part of the file /base/safesetting/ of the component Endpoint. Performing a manipulation of the argument backupencryptionpassworddecrypt/exportencryptionpassworddecrypt results in unprotected storage of credentials. Remote exploitation of the attack is possible. The exploit is now public and may be used. Upgrading to version 9.0.6 is able to mitigate this issue. It is recommended to upgrade the affected component. The vendor confirms: "The mainstream version ZKBioTime V9.0.6 has fixed this vulnerability. Please update to the latest version as soon as possible. For the Middle East version BioTime 9.5.X, you can contact the local technical support to obtain the fix package."

ZKTeco BioTime allows unauthenticated attackers to enumerate usernames and log in as any user with a password unchanged from the default value '123456'. Users should change their passwords (located under the Attendance Settings tab as "Self-Password").

A vulnerability was found in ZKTeco BioTime up to 9.5.2. It has been classified as problematic. Affected is an unknown function of the component system-group-add Handler. The manipulation of the argument user with the input <script>alert('XSS')</script> leads to cross site scripting. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. VDB-270366 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

An issue in ZKTeko BioTime v.8.5.4 and before allows a remote attacker to obtain sensitive information via the Authentication & Authorization component

An issue in ZKTeco BioTime v.8.5.4 and before allows a remote attacker to obtain sensitive information.

A path traversal vulnerability in the iclock API of ZKTeco BioTime v8.5.5 allows unauthenticated attackers to read arbitrary files via supplying a crafted payload.

Insecure access control in ZKTeco BioTime through 9.0.1 allows authenticated attackers to escalate their privileges due to the fact that session ids are not validated for the type of user accessing the application by default. Privilege restrictions between non-admin and admin users are not enforced and any authenticated user can leverage admin functions without restriction by making direct requests to administrative endpoints.

A path traversal vulnerability in ZKTeco BioTime v8.5.5 allows attackers to write arbitrary files via using a malicious SFTP configuration.

An issue in a hidden API in ZKTeco BioTime v8.5.5 allows unauthenticated attackers to arbitrarily reset the Administrator password via a crafted web request.

Zkteco BioTime < 8.5.3 Build:20200816.447 is vulnerable to Incorrect Access Control via resign, private message, manual log, time interval, attshift, and holiday. An authenticated administrator can read local files by exploiting XSS into a pdf generator when exporting data as a PDF

Zkteco BioTime < 8.5.3 Build:20200816.447 is vulnerable to Incorrect Access Control via Leave, overtime, Manual log. An authenticated employee can read local files by exploiting XSS into a pdf generator when exporting data as a PDF

In Zkteco BioTime < 8.5.3 Build:20200816.447, an employee can hijack an administrator session and cookies using blind cross-site scripting.

ZKTeco BioTime 8.5.4 is missing authentication on folders containing employee photos, allowing an attacker to view them through filename enumeration.