CVE-2025-27058
📋 TL;DR
This CVE describes a buffer overflow vulnerability in Qualcomm components where processing packets with excessively large sizes can cause memory corruption. This affects devices using vulnerable Qualcomm chipsets and software. Attackers could potentially execute arbitrary code or cause denial of service.
💻 Affected Systems
- Qualcomm chipsets and associated software/firmware
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or persistent backdoor installation.
Likely Case
Denial of service through system crashes or reboots when processing malicious network traffic.
If Mitigated
Limited impact with proper network segmentation and input validation controls in place.
🎯 Exploit Status
Exploitation requires sending specially crafted network packets to vulnerable systems.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Qualcomm July 2025 security bulletin for specific patched firmware versions
Vendor Advisory: https://docs.qualcomm.com/product/publicresources/securitybulletin/july-2025-bulletin.html
Restart Required: Yes
Instructions:
1. Check Qualcomm advisory for affected chipset models. 2. Obtain updated firmware from device manufacturer. 3. Apply firmware update following manufacturer instructions. 4. Reboot device.
🔧 Temporary Workarounds
Network traffic filtering
allBlock or filter packets with abnormally large sizes at network perimeter
Input validation
allImplement packet size validation in network processing software
🧯 If You Can't Patch
- Segment affected devices in isolated network zones
- Implement strict network access controls and monitor for abnormal packet sizes
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against Qualcomm's advisory for affected chipset modelsCheck Version:
Device-specific; typically 'cat /proc/version' or manufacturer-specific commandsVerify Fix Applied:
Verify firmware version matches patched version from Qualcomm bulletin📡 Detection & Monitoring
Log Indicators:
- System crashes, kernel panics, or abnormal reboots after network traffic
Network Indicators:
- Unusually large network packets directed at vulnerable systems
SIEM Query:
source_ip=* AND packet_size>threshold AND dest_ip=vulnerable_systems