CVE-2025-21452: Qualcomm 315 5g IoT Modem Firmware

High severity, CVSS 7.5. EPSS: 0.2% chance of exploitation in the next 30 days.

Transient DOS while processing a random-access response (RAR) with an invalid PDU length on LTE network.

Affected products

• Qualcomm 315 5g IoT Modem Firmware: affected versions not specified
• Qualcomm AR8035 Firmware: affected versions not specified
• Qualcomm Fastconnect 6200 Firmware: affected versions not specified
• Qualcomm Fastconnect 6700 Firmware: affected versions not specified
• Qualcomm Fastconnect 6800 Firmware: affected versions not specified
• Qualcomm Fastconnect 6900 Firmware: affected versions not specified
• Qualcomm FSM10055 Firmware: affected versions not specified
• Qualcomm QCA6174A Firmware: affected versions not specified
• Qualcomm QCA6391 Firmware: affected versions not specified
• Qualcomm QCA6421 Firmware: affected versions not specified
• Qualcomm QCA6426 Firmware: affected versions not specified
• Qualcomm QCA6431 Firmware: affected versions not specified
• Qualcomm QCA6436 Firmware: affected versions not specified
• Qualcomm QCA6574A Firmware: affected versions not specified
• Qualcomm QCA6574AU Firmware: affected versions not specified
• Qualcomm QCA6595AU Firmware: affected versions not specified
• Qualcomm QCA6696 Firmware: affected versions not specified
• Qualcomm QCA6698AQ Firmware: affected versions not specified
• Qualcomm QCA8337 Firmware: affected versions not specified
• Qualcomm QCM5430 Firmware: affected versions not specified
• Qualcomm QCM6490 Firmware: affected versions not specified
• Qualcomm QCS5430 Firmware: affected versions not specified
• Qualcomm QCS6490 Firmware: affected versions not specified
• Qualcomm QEP8111 Firmware: affected versions not specified
• Qualcomm SD855 Firmware: affected versions not specified
• and 55 more

Published 2025-08-06. Last modified 2026-06-17.