CVE-2025-21094
📋 TL;DR
This vulnerability allows a privileged user with local access to Intel Server D50DNP and M50FCP boards to potentially escalate privileges through improper input validation in the UEFI firmware DXE module. The flaw could enable attackers to gain higher system privileges than intended. Only users with existing privileged access to these specific Intel server boards are affected.
💻 Affected Systems
- Intel Server D50DNP
- Intel Server M50FCP
⚠️ 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
An attacker with existing privileged access could gain complete control over the server hardware, bypass all security controls, and potentially persist across reboots via UEFI firmware compromise.
Likely Case
A malicious insider or compromised administrator account could escalate privileges to gain deeper system access, potentially compromising the entire server infrastructure.
If Mitigated
With proper access controls and monitoring, the impact is limited to authorized administrators who would already have significant system access.
🎯 Exploit Status
Exploitation requires existing privileged access and knowledge of UEFI firmware internals. No public exploits are known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patched UEFI firmware versions specified in Intel advisory
Vendor Advisory: https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01269.html
Restart Required: Yes
Instructions:
1. Download the updated UEFI firmware from Intel's support site. 2. Follow Intel's firmware update procedures for the specific server model. 3. Reboot the server to apply the firmware update. 4. Verify the firmware version has been updated successfully.
🔧 Temporary Workarounds
Restrict Physical Access
allLimit physical access to server hardware to authorized personnel only
Implement Least Privilege
allRestrict administrative privileges to only essential personnel and monitor privileged account usage
🧯 If You Can't Patch
- Implement strict access controls and monitoring for all privileged accounts
- Isolate affected servers in secure network segments and limit their exposure
🔍 How to Verify
Check if Vulnerable:
Check UEFI firmware version in server BIOS/UEFI settings or using Intel's system identification toolsCheck Version:
Use Intel Server Configuration Utility or check BIOS/UEFI settings during bootVerify Fix Applied:
Verify the UEFI firmware version matches the patched version specified in Intel's advisory📡 Detection & Monitoring
Log Indicators:
- Unexpected firmware modification attempts
- Unauthorized BIOS/UEFI access logs
- Privilege escalation attempts from known accounts
Network Indicators:
- None - this is a local access vulnerability
SIEM Query:
Search for BIOS/UEFI firmware modification events or privileged account activity outside normal patterns