CVE-2025-20305
📋 TL;DR
This vulnerability in Cisco ISE allows authenticated read-only administrators to view sensitive passwords that should only be accessible to high-privileged users. Attackers with valid read-only admin credentials can exploit improper data protection mechanisms to access normally hidden password information. Organizations using affected Cisco ISE versions are at risk.
💻 Affected Systems
- Cisco Identity Services Engine (ISE)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers obtain administrative passwords, potentially leading to full system compromise, lateral movement, and data exfiltration.
Likely Case
Attackers with read-only admin access escalate privileges by obtaining passwords for higher-privileged accounts, gaining unauthorized access to sensitive systems.
If Mitigated
With proper access controls and monitoring, exploitation attempts are detected and contained before significant damage occurs.
🎯 Exploit Status
Exploitation requires valid read-only administrator credentials and access to the web management interface
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Cisco advisory for specific fixed versions
Vendor Advisory: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-multiple-vulns-O9BESWJH
Restart Required: Yes
Instructions:
1. Review Cisco advisory for affected versions. 2. Download and apply the appropriate patch from Cisco. 3. Restart affected ISE nodes. 4. Verify patch installation and functionality.
🔧 Temporary Workarounds
Restrict Read-Only Administrator Access
allLimit read-only administrator accounts to only trusted personnel and implement strict access controls
Implement Network Segmentation
allRestrict access to ISE management interface to only authorized management networks
🧯 If You Can't Patch
- Implement strict monitoring of read-only administrator account activity
- Regularly rotate administrative passwords and implement multi-factor authentication
🔍 How to Verify
Check if Vulnerable:
Check Cisco ISE version against affected versions listed in the Cisco security advisoryCheck Version:
show version (in Cisco ISE CLI)Verify Fix Applied:
Verify ISE version is updated to a fixed version listed in the Cisco advisory📡 Detection & Monitoring
Log Indicators:
- Unusual access patterns by read-only administrators
- Multiple failed authentication attempts followed by successful login
Network Indicators:
- Unusual traffic to ISE management interface from unexpected sources
SIEM Query:
source="cisco_ise" AND (event_type="admin_login" OR event_type="password_view") AND user_role="read_only_admin"