CVE-2025-20103
📋 TL;DR
This vulnerability in certain Intel processors allows an authenticated local user to cause denial of service by exhausting resource pools in the core management mechanism. It affects systems running vulnerable Intel processors with local user access. The impact is limited to availability disruption rather than data compromise.
💻 Affected Systems
- Specific Intel processors (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 crash or freeze requiring hard reboot, potentially causing service disruption and data loss from unsaved work.
Likely Case
Performance degradation or temporary unresponsiveness affecting specific applications or services running on the affected system.
If Mitigated
Minimal impact with proper access controls limiting local user privileges and monitoring for resource exhaustion patterns.
🎯 Exploit Status
Requires authenticated local access and knowledge of specific resource exhaustion techniques. No public exploit code identified in references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Processor microcode updates from Intel
Vendor Advisory: https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01244.html
Restart Required: Yes
Instructions:
1. Check Intel advisory for affected processor models. 2. Obtain microcode updates from Intel or system manufacturer. 3. Apply through BIOS/UEFI update or operating system microcode loading mechanism. 4. Reboot system to activate new microcode.
🔧 Temporary Workarounds
Restrict local user privileges
allLimit local user accounts to only necessary privileges to reduce attack surface
Implement resource monitoring
allMonitor system for unusual resource exhaustion patterns that might indicate exploitation attempts
🧯 If You Can't Patch
- Implement strict access controls to limit local user accounts and privileges
- Monitor systems for performance degradation and implement rapid response procedures for potential DoS incidents
🔍 How to Verify
Check if Vulnerable:
Check processor model and microcode version using 'cat /proc/cpuinfo' on Linux or system information tools on Windows, then compare against Intel's affected processor list.Check Version:
Linux: 'cat /proc/cpuinfo | grep microcode' or 'dmesg | grep microcode'; Windows: Use PowerShell 'Get-WmiObject Win32_Processor' or system information toolVerify Fix Applied:
Verify microcode version after update using same commands and confirm it matches or exceeds patched version from Intel advisory.📡 Detection & Monitoring
Log Indicators:
- System crash logs
- Kernel panic messages
- Unexpected system reboots
- Resource exhaustion warnings in system logs
Network Indicators:
- None - local attack only
SIEM Query:
Search for: (EventID: 41 on Windows for unexpected shutdowns) OR (kernel panic/crash messages in Linux syslog) AND (source includes local user activity)