GLPI before before version 9.4.6 has a vulnerability involving a default encryption key. GLPIKEY is public and is used on every instance. This means anyone can decrypt sensitive data stored using this key. It is possible to change the key before installing GLPI. But on existing instances, data must be reencrypted with the new key. Problem is we can not know which columns or rows in the database are using that; espcially from plugins. Changing the key without updating data would lend in bad password sent from glpi; but storing them again from the UI will work.

IBM Security Information Queue (ISIQ) 1.0.0, 1.0.1, 1.0.2, 1.0.3, and 1.0.4 contains hard-coded credentials, such as a password or cryptographic key, which it uses for its own inbound authentication, outbound communication to external components, or encryption of internal data. IBM X-Force ID: 176206.

An issue was discovered in Zoho ManageEngine ADSelfService Plus 5.x through build 5704. It uses fixed ciphering keys to protect information, giving the capacity for an attacker to decipher any protected data.