The vulnerability of the sal_util_str_encrypt() function (libsal.so) in the software for Zyxel routers series GS1900 allows a attacker to disclose protected information.

The vulnerability of the salutilstrencrypt function libsal.so in Zyxel router microsoftware of the GS1900 series exists due to the rigid encoding of registration data. Exploiting this vulnerability can allow a remote attacker to disclose the protected information...