CVE-2025-21455: Qualcomm Fastconnect 6800 Firmware

High severity, CVSS 7.8. EPSS: 0.1% chance of exploitation in the next 30 days.

Memory corruption while submitting blob data to kernel space though IOCTL.

Affected products

• Qualcomm Fastconnect 6800 Firmware: affected versions not specified
• Qualcomm Fastconnect 6900 Firmware: affected versions not specified
• Qualcomm Fastconnect 7800 Firmware: affected versions not specified
• Qualcomm QCA6391 Firmware: affected versions not specified
• Qualcomm QCA6426 Firmware: affected versions not specified
• Qualcomm QCA6436 Firmware: affected versions not specified
• Qualcomm QSM8250 Firmware: affected versions not specified
• Qualcomm SD865 5g Firmware: affected versions not specified
• Qualcomm SDX55 Firmware: affected versions not specified
• Qualcomm Snapdragon 865+ 5g Mobile Platform (sm8250-Ab) Firmware: affected versions not specified
• Qualcomm Snapdragon 865 5g Mobile Platform Firmware: affected versions not specified
• Qualcomm Snapdragon 870 5g Mobile Platform (sm8250-Ac) Firmware: affected versions not specified
• Qualcomm Snapdragon 8 Gen 1 Mobile Platform Firmware: affected versions not specified
• Qualcomm Snapdragon x55 5g Modem-Rf System Firmware: affected versions not specified
• Qualcomm Snapdragon XR2 5g Platform Firmware: affected versions not specified
• Qualcomm SW5100 Firmware: affected versions not specified
• Qualcomm SW5100P Firmware: affected versions not specified
• Qualcomm SXR2130 Firmware: affected versions not specified
• Qualcomm SXR2230P Firmware: affected versions not specified
• Qualcomm SXR2250P Firmware: affected versions not specified
• Qualcomm WCD9380 Firmware: affected versions not specified
• Qualcomm WCD9385 Firmware: affected versions not specified
• Qualcomm WCN3980 Firmware: affected versions not specified
• Qualcomm WCN3988 Firmware: affected versions not specified
• Qualcomm WSA8810 Firmware: affected versions not specified
• and 4 more

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