CVE-2025-14303
📋 TL;DR
This vulnerability allows unauthenticated physical attackers with DMA-capable PCIe devices to read and write arbitrary physical memory on affected MSI motherboards before the OS kernel loads. This bypasses operating system security mechanisms and affects systems using vulnerable MSI motherboard models. The attack requires physical access to the vulnerable hardware.
💻 Affected Systems
- MSI motherboards with vulnerable firmware
⚠️ 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 including extraction of encryption keys, credentials, and sensitive data from memory, or installation of persistent firmware-level malware.
Likely Case
Data theft from memory including passwords, encryption keys, and sensitive application data when an attacker has brief physical access.
If Mitigated
Limited impact if physical security controls prevent unauthorized access to hardware and BIOS/UEFI protections are enabled.
🎯 Exploit Status
Requires physical access and DMA-capable PCIe device; technical knowledge needed but documented attack vectors exist for similar vulnerabilities.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check MSI advisory for specific firmware updates
Vendor Advisory: https://csr.msi.com/global/product-security-advisories
Restart Required: Yes
Instructions:
1. Check MSI security advisory for affected models. 2. Download latest BIOS/UEFI firmware from MSI support site. 3. Follow manufacturer instructions to update motherboard firmware. 4. Verify IOMMU/SVM/VT-d is enabled in BIOS settings after update.
🔧 Temporary Workarounds
Enable IOMMU/VT-d/SVM in BIOS
allManually enable hardware virtualization protections in BIOS/UEFI settings if available
Physical security controls
allImplement physical access controls to prevent unauthorized hardware access
🧯 If You Can't Patch
- Implement strict physical security controls including locked server rooms, tamper-evident seals, and access logging
- Consider replacing vulnerable hardware with models that have proper IOMMU protection enabled by default
🔍 How to Verify
Check if Vulnerable:
Check motherboard model against MSI advisory; verify IOMMU/VT-d/SVM is disabled in BIOS settingsCheck Version:
System-specific: Check BIOS/UEFI version during boot or using manufacturer utilitiesVerify Fix Applied:
Confirm firmware version matches patched version in MSI advisory; verify IOMMU/VT-d/SVM is enabled in BIOS settings📡 Detection & Monitoring
Log Indicators:
- Unexpected system reboots
- BIOS/UEFI setting changes
- Physical access logs showing unauthorized entry
Network Indicators:
- None - physical access attack
SIEM Query:
Search for physical access violations combined with system reboots or firmware changes