CVE-2025-12216 – A vulnerability in BLU-IC2 and BLU-IC4 devices ... (How to Fix)

Q: What is the severity of CVE-2025-12216?

CVE-2025-12216 has a CVSS score of 5.5 (MEDIUM). A vulnerability in BLU-IC2 and BLU-IC4 devices allows malicious or malformed applications to be installed but not uninstalled, potentially leading to system unavailability. This affects all versions through 1.19.5. The issue stems from improper input validation (CWE-1301).

📋 TL;DR

A vulnerability in BLU-IC2 and BLU-IC4 devices allows malicious or malformed applications to be installed but not uninstalled, potentially leading to system unavailability. This affects all versions through 1.19.5. The issue stems from improper input validation (CWE-1301).

💻 Affected Systems

Products:

BLU-IC2
BLU-IC4

Versions: through 1.19.5

Operating Systems: Embedded/IoT OS

Default Config Vulnerable: ⚠️ Yes

Notes: All configurations running affected versions are vulnerable. No specific OS requirements mentioned.

📦 What is this software?

Blu Ic2 Firmware by Azure Access

View all CVEs affecting Blu Ic2 Firmware →

Blu Ic4 Firmware by Azure Access

View all CVEs affecting Blu Ic4 Firmware →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Permanent installation of malicious apps causing complete device unavailability, requiring hardware replacement or factory reset with data loss.

🟠

Likely Case

Installation of unwanted apps that cannot be removed, degrading device performance and potentially enabling further attacks.

🟢

If Mitigated

Limited impact with proper app vetting and monitoring, though uninstall capability remains broken.

🌐 Internet-Facing: MEDIUM

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ✅ No

Complexity: MEDIUM

Requires ability to install apps on device. No public exploit details available.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Versions after 1.19.5

Vendor Advisory: https://azure-access.com/security-advisories

Restart Required: No

Instructions:

1. Check current version. 2. Update to version after 1.19.5 via vendor update mechanism. 3. Verify update successful.

🔧 Temporary Workarounds

Restrict app installation

all

Prevent installation of new applications to avoid exploitation

Configure device to disable app installation via admin interface

🧯 If You Can't Patch

Isolate affected devices from untrusted networks
Implement strict monitoring for unauthorized app installations

🔍 How to Verify

Check if Vulnerable:

Check device firmware version via admin interface or CLI

Check Version:

Check device admin interface for firmware version

Verify Fix Applied:

Confirm version is greater than 1.19.5 and test app uninstall functionality

📡 Detection & Monitoring

Log Indicators:

Failed uninstall attempts
Unexpected app installation events

Network Indicators:

Unusual outbound connections from device

SIEM Query:

Search for app installation events followed by failed uninstall attempts

📊 Metadata

CVE ID: CVE-2025-12216

CVSS v3 Score: 5.5 (MEDIUM)

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

CWE: CWE-1301

EPSS Score: 0.04% exploit probability (10.5th percentile)

Published: October 25, 2025

Last Updated: November 10, 2025

🔗 References

https://azure-access.com/security-advisories Vendor Advisory

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