CVE-2025-20346
📋 TL;DR
This vulnerability in Cisco Catalyst Center allows authenticated users with read-only (Observer) privileges to perform administrative operations due to improper role-based access control (RBAC). Attackers with valid low-privilege credentials can modify policy configurations reserved for administrators. Organizations using affected Cisco Catalyst Center versions are at risk.
💻 Affected Systems
- Cisco Catalyst Center
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker with Observer credentials could gain full administrative control, modify network policies, disrupt operations, or establish persistence in the network management system.
Likely Case
Privileged users or compromised accounts could escalate privileges to modify network configurations, potentially causing service disruptions or security policy violations.
If Mitigated
With proper access controls and monitoring, impact is limited to policy modifications that can be detected and rolled back before causing significant damage.
🎯 Exploit Status
Exploitation requires valid credentials but is straightforward once authenticated; no special tools or techniques needed
🛠️ 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-privesc-catc-rYjReeLU
Restart Required: Yes
Instructions:
1. Review Cisco advisory for affected versions 2. Download and apply the appropriate patch 3. Restart Cisco Catalyst Center services 4. Verify patch installation
🔧 Temporary Workarounds
Restrict Observer Role Access
allTemporarily remove or restrict Observer role users until patching can be completed
Enhanced Monitoring
allImplement strict monitoring of policy configuration changes and user activities
🧯 If You Can't Patch
- Implement strict least-privilege access controls and review all user accounts with Observer or higher roles
- Enable comprehensive logging and monitoring of all configuration changes with immediate alerting for unauthorized modifications
🔍 How to Verify
Check if Vulnerable:
Check Cisco Catalyst Center version against affected versions listed in Cisco advisoryCheck Version:
Check via Cisco Catalyst Center web interface or CLI (specific command varies by version)Verify Fix Applied:
Verify installed version matches or exceeds fixed version from Cisco advisory and test that Observer users cannot modify administrative policies📡 Detection & Monitoring
Log Indicators:
- Unauthorized policy modifications by non-admin users
- Multiple failed privilege escalation attempts
- Configuration changes from Observer role accounts
Network Indicators:
- Unusual API calls to administrative endpoints from non-admin accounts
- Policy configuration changes outside maintenance windows
SIEM Query:
source="catalyst_center" AND (event_type="policy_change" AND user_role!="admin")