CVE-2025-47394 Buffer Copy Without Checking Size of Input in DSP Service
Attacker can exploit buffer overflow in DSP service to execute arbitrary code or escalate privileges on Android devices using Qualcomm Snapdragon chips.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-47394?
CVE-2025-47394 is a high-severity memory corruption vulnerability in Qualcomm Fastconnect 6200 Firmware, published on 6 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Memory corruption when copying overlapping buffers during memory operations due to incorrect offset calculations.
Weakness: CWE-120
Which versions are affected by CVE-2025-47394?
It affects 45 products.
Products include Qualcomm Fastconnect 6200 Firmware, Qualcomm Fastconnect 6700 Firmware, Qualcomm Fastconnect 6900 Firmware, Qualcomm Fastconnect 7800 Firmware, Qualcomm Qcs610 Firmware, Qualcomm Qmp1000 Firmware and 39 more.
How do I fix CVE-2025-47394?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-47394 being exploited?
There is no known exploitation of CVE-2025-47394 in the wild and no public exploit code.
Other vulnerabilities in Qualcomm Fastconnect 6200 Firmware
Sources
Also known as 4202921, A-449732573, ASB-A-449732573, GHSA-5w7p-x2hw-f4q6.