CVE-2025-20097
📋 TL;DR
An uncaught exception vulnerability in OpenBMC firmware for specific Intel server families allows authenticated users to potentially cause denial of service via network access. This affects Intel Server M50FCP and D50DNP families running vulnerable firmware versions. Attackers with valid credentials could disrupt BMC functionality.
💻 Affected Systems
- Intel Server M50FCP Family
- Intel Server D50DNP Family
⚠️ 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 loss of BMC management capabilities, preventing remote server administration, monitoring, and power control until physical intervention.
Likely Case
Temporary disruption of specific BMC functions or services, requiring reboot or firmware recovery procedures.
If Mitigated
Minimal impact with proper authentication controls and network segmentation limiting access to BMC interfaces.
🎯 Exploit Status
Requires authenticated access to BMC. The specific uncaught exception trigger details are not publicly documented.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: R01.02.0002
Vendor Advisory: https://intel.com/content/www/us/en/security-center/advisory/intel-sa-00990.html
Restart Required: Yes
Instructions:
1. Download firmware version R01.02.0002 from Intel support portal. 2. Follow Intel's BMC firmware update procedures for affected server models. 3. Apply firmware update through BMC web interface or IPMI tools. 4. Reboot the BMC controller after update completion.
🔧 Temporary Workarounds
Restrict BMC Network Access
linuxLimit network access to BMC interfaces to only authorized management networks and administrators.
iptables -A INPUT -p tcp --dport 443 -s trusted_network -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP
Strengthen Authentication
allImplement strong BMC credentials, multi-factor authentication if supported, and regular credential rotation.
🧯 If You Can't Patch
- Isolate BMC management network from general corporate network using VLANs or physical separation
- Implement strict access controls and monitor all BMC authentication attempts for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Check BMC firmware version via web interface at https://<bmc_ip> or using ipmitool: ipmitool mc info | grep 'Firmware Revision'Check Version:
ipmitool mc info | grep 'Firmware Revision'Verify Fix Applied:
Confirm firmware version shows R01.02.0002 or later after update📡 Detection & Monitoring
Log Indicators:
- BMC service crashes or restarts
- Authentication logs showing repeated failed/successful logins before service disruption
- Exception or crash logs in BMC system logs
Network Indicators:
- Unusual traffic patterns to BMC IP addresses on ports 443, 623, 5900
- Multiple authentication attempts followed by service unavailability
SIEM Query:
source="bmc_logs" AND ("exception" OR "crash" OR "service stopped")