CVE-2025-20305: 
Cisco ISE vulnerability analysis and mitigation

A vulnerability in the web-based management interface of Cisco ISE (Identity Services Engine) could allow an authenticated, remote attacker to obtain sensitive information from an affected device. The vulnerability (CVE-2025-20305) was disclosed on November 5, 2025, affecting Cisco ISE and Cisco ISE Passive Identity Connector (ISE-PIC) systems. The vulnerability exists due to insufficient data protection mechanisms in certain files (Cisco Advisory).

The vulnerability stems from files lacking proper data protection mechanisms in the web-based management interface. It has been assigned a CVSS Base Score of 4.3 (Medium) with the vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N. The vulnerability is classified under CWE-1220 (Insufficient Granularity of Access Control). An attacker with read-only Administrator privileges could exploit this vulnerability by performing actions where the results should only be viewable to a high-privileged user (Cisco Advisory, NVD).

A successful exploitation of this vulnerability would allow an attacker with read-only Administrator privileges to view passwords that are normally not visible to read-only administrators. This represents a significant elevation of privilege within the system's access control structure (Cisco Advisory).

Cisco has released software updates that address this vulnerability. The fixed releases include ISE version 3.2 Patch 8 (Dec 2025), 3.3 Patch 8 (Nov 2025), and 3.4 Patch 4. Version 3.5 is not vulnerable to this issue. There are no workarounds available that address this vulnerability (Cisco Advisory).