CVE-2025-47378
📋 TL;DR
This cryptographic vulnerability in Qualcomm chipsets allows the High-Level Operating System (HLOS) to access the boot loader's certificate chain through a shared VM reference. This could enable attackers to bypass secure boot protections or extract sensitive cryptographic material. The vulnerability affects devices using affected Qualcomm chipsets, primarily mobile devices and embedded systems.
💻 Affected Systems
- Qualcomm chipsets with affected boot loader implementations
📦 What is this software?
Snapdragon 8 Elite Gen 5 Firmware by Qualcomm
Snapdragon 865 5g Mobile Platform Firmware by Qualcomm
View all CVEs affecting Snapdragon 865 5g Mobile Platform Firmware →
Snapdragon 865 5g Mobile Platform Firmware by Qualcomm
View all CVEs affecting Snapdragon 865 5g Mobile Platform Firmware →
Snapdragon 870 5g Mobile Platform Firmware by Qualcomm
View all CVEs affecting Snapdragon 870 5g Mobile Platform Firmware →
Snapdragon Ar1 Gen 1 Platform Firmware by Qualcomm
View all CVEs affecting Snapdragon Ar1 Gen 1 Platform Firmware →
Snapdragon Ar1 Gen 1 Platform Firmware by Qualcomm
View all CVEs affecting Snapdragon Ar1 Gen 1 Platform Firmware →
Snapdragon X55 5g Modem Rf System Firmware by Qualcomm
View all CVEs affecting Snapdragon X55 5g Modem Rf System Firmware →
Snapdragon Xr2 5g Platform Firmware by Qualcomm
View all CVEs affecting Snapdragon Xr2 5g Platform Firmware →
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of secure boot chain allowing persistent malware installation, extraction of cryptographic keys enabling device impersonation, and potential permanent device compromise.
Likely Case
Extraction of certificate chain information enabling analysis of secure boot implementation, potential for targeted attacks against specific device models, and reduced trust in device authentication.
If Mitigated
Limited information disclosure with no direct code execution path, contained within isolated VM environment with proper access controls.
🎯 Exploit Status
Exploitation requires deep understanding of Qualcomm's secure boot architecture and likely requires physical device access or privileged system access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Qualcomm March 2026 security bulletin for specific patch versions
Vendor Advisory: https://docs.qualcomm.com/product/publicresources/securitybulletin/march-2026-bulletin.html
Restart Required: Yes
Instructions:
1. Check device manufacturer for security updates. 2. Apply Qualcomm-provided firmware updates. 3. Reboot device to activate new boot loader. 4. Verify secure boot chain integrity.
🔧 Temporary Workarounds
Restrict physical access
allLimit physical access to devices to prevent local exploitation attempts
Enable full disk encryption
allAdds additional protection layer for data at rest
🧯 If You Can't Patch
- Isolate affected devices on separate network segments
- Implement strict physical security controls and device inventory monitoring
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against Qualcomm security bulletin. Use manufacturer-specific tools to verify boot loader version.Check Version:
Device-specific commands vary by manufacturer (e.g., Android: getprop ro.bootloader, Linux-based: dmidecode or manufacturer tools)Verify Fix Applied:
Verify firmware has been updated to version listed in Qualcomm's patched releases. Check secure boot status shows no warnings.📡 Detection & Monitoring
Log Indicators:
- Boot loader integrity check failures
- Unexpected VM access attempts
- Secure boot violation logs
Network Indicators:
- None - local vulnerability only
SIEM Query:
Search for boot-related security events, failed integrity checks, or unauthorized access to boot partition