CVE-2025-14302
📋 TL;DR
This vulnerability allows unauthenticated physical attackers with DMA-capable PCIe devices to read and write arbitrary physical memory on affected GIGABYTE motherboards before the OS kernel loads. This bypasses operating system security features and affects systems using vulnerable motherboard models. The attack requires physical access to the hardware.
💻 Affected Systems
- Specific GIGABYTE motherboard models (exact models not specified in provided references)
⚠️ 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, firmware modification, persistent malware installation, and bypass of all OS-level security controls.
Likely Case
Data theft from memory, credential harvesting, or installation of boot-level malware that persists across OS reinstalls.
If Mitigated
Limited impact if physical access controls prevent unauthorized device connection and BIOS/UEFI protections are enabled.
🎯 Exploit Status
Exploitation requires physical access, DMA-capable PCIe device, and technical knowledge of memory addressing. No public exploit code identified in references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: BIOS/UEFI updates from GIGABYTE
Vendor Advisory: https://www.gigabyte.com/Support/Security?type=1
Restart Required: Yes
Instructions:
1. Check GIGABYTE security advisory for affected motherboard models. 2. Download latest BIOS/UEFI firmware from GIGABYTE website. 3. Follow manufacturer's BIOS update instructions. 4. Verify IOMMU is properly enabled in updated BIOS settings.
🔧 Temporary Workarounds
Enable IOMMU in BIOS/UEFI
allManually enable IOMMU (VT-d for Intel, AMD-Vi for AMD) in BIOS/UEFI settings if not enabled by default
Physical Security Controls
allImplement physical security measures to prevent unauthorized PCIe device installation
🧯 If You Can't Patch
- Implement strict physical access controls to prevent unauthorized hardware access
- Disable unused PCIe slots in BIOS/UEFI settings and physically secure chassis
🔍 How to Verify
Check if Vulnerable:
Check motherboard model against GIGABYTE security advisory. In Linux: check dmesg for IOMMU messages or use 'dmesg | grep -i iommu'. In Windows: check System Information for motherboard details.Check Version:
Linux: 'sudo dmidecode -t bios' or 'cat /sys/class/dmi/id/bios_version'. Windows: 'wmic bios get smbiosbiosversion' or check System Information.Verify Fix Applied:
Verify BIOS/UEFI version is updated to patched version. Check that IOMMU is enabled in BIOS settings and confirmed by OS (Linux: 'dmesg | grep -i iommu' should show enabled; Windows: check Device Manager for IOMMU devices).📡 Detection & Monitoring
Log Indicators:
- Unexpected PCIe device connections in system logs
- BIOS/UEFI modification events
- Kernel panic or instability during boot
Network Indicators:
- Not applicable - physical attack vector
SIEM Query:
Not applicable for network detection. Monitor physical access logs and hardware inventory changes.