CVE-2025-47394
📋 TL;DR
This CVE describes a memory corruption vulnerability in Qualcomm components where incorrect offset calculations during overlapping buffer copy operations can lead to arbitrary code execution. It affects devices using vulnerable Qualcomm chipsets, potentially including smartphones, IoT devices, and embedded systems.
💻 Affected Systems
- Qualcomm chipsets and associated firmware
📦 What is this software?
Snapdragon 4 Gen 2 Mobile Platform Firmware by Qualcomm
View all CVEs affecting Snapdragon 4 Gen 2 Mobile Platform Firmware →
Snapdragon 6 Gen 1 Mobile Platform Firmware by Qualcomm
View all CVEs affecting Snapdragon 6 Gen 1 Mobile Platform Firmware →
Snapdragon W5\+ Gen 1 Wearable Platform Firmware by Qualcomm
View all CVEs affecting Snapdragon W5\+ Gen 1 Wearable Platform Firmware →
Video Collaboration Vc1 Platform Firmware by Qualcomm
View all CVEs affecting Video Collaboration Vc1 Platform Firmware →
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or persistent backdoor installation.
Likely Case
Application crashes, denial of service, or limited information disclosure in constrained environments.
If Mitigated
Controlled crashes without code execution if memory protections like ASLR and DEP are properly implemented.
🎯 Exploit Status
Memory corruption vulnerabilities often require specific conditions to achieve reliable exploitation
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Qualcomm January 2026 security bulletin for specific patched versions
Vendor Advisory: https://docs.qualcomm.com/product/publicresources/securitybulletin/january-2026-bulletin.html
Restart Required: Yes
Instructions:
1. Check Qualcomm advisory for affected chipset/firmware versions. 2. Obtain firmware updates from device manufacturer. 3. Apply updates following manufacturer instructions. 4. Reboot device to activate patches.
🔧 Temporary Workarounds
Memory protection enforcement
allEnsure Address Space Layout Randomization (ASLR) and Data Execution Prevention (DEP) are enabled to reduce exploit reliability
🧯 If You Can't Patch
- Isolate affected devices on segmented networks with strict access controls
- Implement application whitelisting to prevent unauthorized code execution
🔍 How to Verify
Check if Vulnerable:
Check device firmware/chipset version against Qualcomm's January 2026 security bulletinCheck Version:
Device-specific commands vary by manufacturer; typically 'cat /proc/version' or device settings > aboutVerify Fix Applied:
Verify firmware version matches patched versions listed in Qualcomm advisory📡 Detection & Monitoring
Log Indicators:
- Unexpected process crashes, memory access violation errors in system logs
Network Indicators:
- Unusual outbound connections from embedded devices
SIEM Query:
Process termination events with memory violation error codes from embedded systems