CVE-2025-21100
📋 TL;DR
This CVE describes an improper initialization vulnerability in UEFI firmware for specific Intel server boards that could allow a privileged local user to potentially enable information disclosure. The vulnerability affects Intel Server D50DNP and M50FCP boards. Attackers need local privileged access to exploit this flaw.
💻 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
A privileged attacker could extract sensitive information from UEFI firmware memory, potentially exposing system configuration, cryptographic keys, or other sensitive data stored in firmware.
Likely Case
A malicious insider or compromised administrator account could extract limited system information from firmware memory regions.
If Mitigated
With proper access controls and monitoring, the impact is limited to authorized administrators who would already have access to sensitive system information.
🎯 Exploit Status
Exploitation requires privileged local access and knowledge of UEFI firmware internals.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Intel advisory for specific firmware versions
Vendor Advisory: https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01269.html
Restart Required: Yes
Instructions:
1. Visit Intel Security Advisory INTEL-SA-01269. 2. Download appropriate firmware update for your server model. 3. Follow Intel's firmware update procedures. 4. Reboot system to apply firmware update.
🔧 Temporary Workarounds
Restrict physical and privileged access
allLimit physical access to servers and implement strict privileged access management
🧯 If You Can't Patch
- Implement strict privileged access controls and monitoring
- Isolate affected systems in secure network segments
🔍 How to Verify
Check if Vulnerable:
Check server firmware version against Intel advisory INTEL-SA-01269Check Version:
dmidecode -t bios (Linux) or wmic bios get smbiosbiosversion (Windows)Verify Fix Applied:
Verify firmware version has been updated to patched version specified in Intel advisory📡 Detection & Monitoring
Log Indicators:
- Unusual firmware access attempts
- Privileged user accessing firmware tools
Network Indicators:
- No network indicators - local exploit only
SIEM Query:
Search for firmware update events or privileged access to firmware management tools