CVE-2026-20098
📋 TL;DR
This vulnerability in Cisco Meeting Management allows authenticated attackers with video operator privileges to upload malicious files through the web interface, leading to arbitrary command execution with root privileges. It affects systems with the Certificate Management feature enabled. Attackers can completely compromise affected systems.
💻 Affected Systems
- Cisco Meeting Management
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with root access, data exfiltration, lateral movement, and persistent backdoor installation.
Likely Case
Unauthorized file upload leading to command execution, privilege escalation, and system takeover.
If Mitigated
Limited impact if strong authentication controls, network segmentation, and least privilege are enforced.
🎯 Exploit Status
Requires valid credentials with video operator privileges. Exploitation involves sending crafted HTTP requests.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Cisco advisory for specific fixed versions
Vendor Advisory: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cmm-file-up-kY47n8kK
Restart Required: Yes
Instructions:
1. Review Cisco advisory for affected versions. 2. Download and apply the latest software update from Cisco. 3. Restart the Cisco Meeting Management system. 4. Verify the update was successful.
🔧 Temporary Workarounds
Restrict network access
allLimit access to Cisco Meeting Management web interface to trusted IP addresses only
Configure firewall rules to restrict access to Cisco Meeting Management management interface
Review user privileges
allAudit and minimize users with video operator or higher privileges
Review user accounts in Cisco Meeting Management administration interface
🧯 If You Can't Patch
- Isolate the Cisco Meeting Management system in a restricted network segment
- Implement strict access controls and monitor for suspicious file upload activities
🔍 How to Verify
Check if Vulnerable:
Check Cisco Meeting Management version against advisory. If running affected version with Certificate Management enabled, system is vulnerable.Check Version:
Check version through Cisco Meeting Management web interface or CLIVerify Fix Applied:
Verify system is running a version listed as fixed in Cisco advisory and Certificate Management feature is functioning properly.📡 Detection & Monitoring
Log Indicators:
- Unusual file upload activities in web interface logs
- Suspicious HTTP requests to certificate management endpoints
- Unexpected privilege escalation events
Network Indicators:
- Unusual outbound connections from Cisco Meeting Management system
- HTTP requests with crafted parameters to management interface
SIEM Query:
Search for file upload events to Cisco Meeting Management certificate endpoints from non-admin users