CVE-2026-20300 describes an SQL injection vulnerability in Cisco ISE that requires the attacker to have at least low-privileged administrative credentials. The vulnerability arises from improper validation of user-supplied input, which can be exploited by sending crafted requests to the device. Successful exploitation could lead to unauthorized reading or modification of data in the backend database. The CVSS 3.1 base score is 7.1, reflecting network attack vector, low attack complexity, required privileges, no user interaction, and impacts on confidentiality and integrity but not availability. No vendor advisory or patch information is available in the provided data.

An attacker with low-privileged administrative access could exploit this vulnerability to perform SQL injection attacks, potentially reading or modifying sensitive data stored in the Cisco ISE database. This could compromise the confidentiality and integrity of the system's data. There is no indication of availability impact or known exploits in the wild at this time.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict administrative access to trusted personnel only and monitor for suspicious activity related to database queries or input validation. Avoid exposing Cisco ISE management interfaces to untrusted networks.