CVE-2025-21438 Out-of-bounds Read in Windows WLAN Host
An out-of-bounds read in Qualcomm Snapdragon WLAN firmware allows attackers to trigger memory corruption via IOCTL calls, potentially leading to code execution or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-21438?
CVE-2025-21438 is a high-severity memory corruption vulnerability in Qualcomm Fastconnect 6200 Firmware, published on 7 Apr 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Memory corruption while IOCTL call is invoked from user-space to read board data.
Weakness: CWE-125
Which versions are affected by CVE-2025-21438?
It affects 43 products.
Products include Qualcomm Fastconnect 6200 Firmware, Qualcomm Fastconnect 6700 Firmware, Qualcomm Fastconnect 6900 Firmware, Qualcomm Fastconnect 7800 Firmware, Qualcomm Qca6164 Firmware, Qualcomm Qca6174 Firmware and 37 more.
How do I fix CVE-2025-21438?
No fix has been published for CVE-2025-21438 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-21438 being exploited?
There is no known exploitation of CVE-2025-21438 in the wild and no public exploit code.
Other vulnerabilities in Qualcomm Fastconnect 6200 Firmware
Sources
Also known as GHSA-8gwj-4mvc-6737.