CVE-2025-12221: Azure-Access Blu-IC2 Firmware

High severity, CVSS 8.8. EPSS: 0.2% chance of exploitation in the next 30 days.

Busybox 1.31.1 - Multiple Known Vulnerabilities.This issue affects BLU-IC2: through 1.19.5; BLU-IC4: through 1.19.5.

Affected products

• Azure-Access Blu-IC2 Firmware: before 1.20 (fixed in 1.20)
• Azure-Access Blu-IC4 Firmware: before 1.20 (fixed in 1.20)

Published 2025-10-25. Last modified 2026-06-17.