CVE-2025-22889
📋 TL;DR
This vulnerability in Intel Xeon 6 processors with TDX (Trust Domain Extensions) allows a privileged user to escalate privileges via local access due to improper handling of overlapping protected memory ranges. It affects systems using these specific Intel processors with TDX enabled. The impact is limited to local attackers with existing privileged access.
💻 Affected Systems
- Intel Xeon 6 processors with Intel TDX
⚠️ 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 gain full system control, bypassing TDX memory protections to access sensitive data or execute arbitrary code in protected domains.
Likely Case
Privileged users (like administrators or compromised accounts) could escalate privileges within TDX-protected environments, potentially accessing isolated workloads or sensitive data.
If Mitigated
With proper access controls and monitoring, impact is limited to authorized users who would need to bypass additional security layers to exploit the vulnerability.
🎯 Exploit Status
Exploitation requires local privileged access and knowledge of TDX memory management.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Microcode updates from Intel; OS-specific patches (e.g., Debian security updates)
Vendor Advisory: https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01311.html
Restart Required: Yes
Instructions:
1. Check Intel advisory for specific microcode updates. 2. Apply microcode updates via BIOS/UEFI or OS mechanisms. 3. Apply OS patches if available (e.g., Debian security updates). 4. Reboot system to activate fixes.
🔧 Temporary Workarounds
Disable TDX
allDisable Intel TDX feature if not required, eliminating the attack surface
Check BIOS/UEFI settings for TDX/Trust Domain Extensions and disable
🧯 If You Can't Patch
- Restrict privileged access to systems with affected processors and TDX enabled
- Implement strict monitoring and logging of privileged user activities on affected systems
🔍 How to Verify
Check if Vulnerable:
Check processor model and TDX status: lscpu | grep -i 'xeon 6' and check /proc/cpuinfo for TDX flagsCheck Version:
cat /proc/cpuinfo | grep -i 'model name' && grep -i 'microcode' /proc/cpuinfoVerify Fix Applied:
Verify microcode version matches Intel's patched version: dmesg | grep -i microcode and check OS patch status📡 Detection & Monitoring
Log Indicators:
- Unusual privileged process behavior, TDX-related errors in system logs
Network Indicators:
- None - local exploitation only
SIEM Query:
Process monitoring for unexpected privilege escalation on systems with Xeon 6 processors