CVE-2025-27067 – This vulnerability allows memory corruption whe... (How to Fix)

Q: What is the severity of CVE-2025-27067?

CVE-2025-27067 has a CVSS score of 7.8 (HIGH). This vulnerability allows memory corruption when processing DDI calls with invalid buffers in Qualcomm components. Attackers could potentially execute arbitrary code or cause denial of service. Affects systems using vulnerable Qualcomm hardware/drivers.

📋 TL;DR

This vulnerability allows memory corruption when processing DDI calls with invalid buffers in Qualcomm components. Attackers could potentially execute arbitrary code or cause denial of service. Affects systems using vulnerable Qualcomm hardware/drivers.

💻 Affected Systems

Products:

Qualcomm chipsets with vulnerable DDI implementations

Versions: Specific versions not detailed in reference; check Qualcomm advisory

Operating Systems: Android, Linux, and other OS using Qualcomm drivers

Default Config Vulnerable: ⚠️ Yes

Notes: Affects devices with Qualcomm hardware components; exact models depend on chipset implementation

📦 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

Local privilege escalation or denial of service affecting device stability

🟢

If Mitigated

Limited to denial of service with proper memory protections and exploit mitigations

🌐 Internet-Facing: MEDIUM

🏢 Internal Only: HIGH

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ✅ No

Complexity: MEDIUM

Requires local access or ability to trigger DDI calls; buffer validation bypass needed

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Check Qualcomm August 2025 security bulletin for specific firmware/driver versions

Vendor Advisory: https://docs.qualcomm.com/product/publicresources/securitybulletin/august-2025-bulletin.html

Restart Required: Yes

Instructions:

1. Check Qualcomm advisory for affected chipset/driver versions. 2. Obtain updated firmware/drivers from device manufacturer. 3. Apply patches following manufacturer instructions. 4. Reboot system.

🔧 Temporary Workarounds

Restrict DDI access

all

Limit access to DDI interfaces to trusted processes only

Enable memory protections

all

Ensure ASLR, DEP, and other exploit mitigations are active

🧯 If You Can't Patch

Isolate affected systems from untrusted networks
Implement strict access controls and monitor for abnormal DDI activity

🔍 How to Verify

Check if Vulnerable:

Check device firmware/driver versions against Qualcomm advisory; examine system logs for DDI-related errors

Check Version:

Device-specific commands vary; consult manufacturer documentation for version checking

Verify Fix Applied:

Verify firmware/driver version matches patched version from advisory; test DDI functionality

📡 Detection & Monitoring

Log Indicators:

Unexpected DDI call failures
Memory access violation logs
Driver crash reports

Network Indicators:

Unusual local process communication patterns

SIEM Query:

Search for driver crash events or memory corruption alerts related to Qualcomm components

📊 Metadata

CVE ID: CVE-2025-27067

CVSS v3 Score: 7.8 (HIGH)

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE: CWE-129

EPSS Score: 0.02% exploit probability (3.2th percentile)

Published: August 6, 2025

Last Updated: August 18, 2025

🔗 References

https://docs.qualcomm.com/product/publicresources/securitybulletin/august-2025-bulletin.html Vendor Advisory

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🔗 Related Vulnerabilities

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