CVE-2025-20223
📋 TL;DR
This vulnerability in Cisco Catalyst Center (formerly DNA Center) allows authenticated remote attackers to bypass access controls and read/modify data in internal service repositories. Attackers can exploit it by sending crafted HTTP requests to affected devices. Organizations using vulnerable versions of Cisco Catalyst Center are affected.
💻 Affected Systems
- Cisco Catalyst Center
- Cisco DNA Center
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attacker gains unauthorized access to sensitive configuration data, modifies system settings, potentially disrupting network operations or enabling further attacks.
Likely Case
Unauthorized data access and modification within internal service repositories, potentially exposing sensitive configuration information.
If Mitigated
Limited impact due to proper network segmentation, strong authentication controls, and monitoring of administrative access.
🎯 Exploit Status
Requires authenticated access but exploitation is straightforward once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.3.7.6 and later
Vendor Advisory: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-catc-insec-acc-mtt8EhEb
Restart Required: Yes
Instructions:
1. Backup current configuration. 2. Download and install Catalyst Center version 2.3.7.6 or later from Cisco Software Center. 3. Follow Cisco's upgrade documentation for proper installation procedure. 4. Verify successful upgrade and functionality.
🔧 Temporary Workarounds
Restrict Administrative Access
allLimit administrative access to Catalyst Center to only trusted IP addresses and users
Network Segmentation
allIsolate Catalyst Center management interface from general network access
🧯 If You Can't Patch
- Implement strict access controls and network segmentation to limit exposure
- Enable detailed logging and monitoring for suspicious HTTP requests to Catalyst Center
🔍 How to Verify
Check if Vulnerable:
Check Catalyst Center version via web interface (System > About) or CLI command 'show version'Check Version:
show versionVerify Fix Applied:
Verify version is 2.3.7.6 or later and test administrative functions📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP requests to internal service endpoints
- Multiple failed authentication attempts followed by successful access
- Unexpected data access patterns in service logs
Network Indicators:
- HTTP requests to unusual Catalyst Center endpoints
- Traffic from unexpected sources to management interface
SIEM Query:
source="catalyst-center" AND (http_method="POST" OR http_method="PUT") AND uri CONTAINS "/api/" AND status=200 AND user_agent NOT IN ["normal-user-agents"]