CVE-2025-47403 Buffer Over-read in WLAN Firmware
A buffer over-read in Qualcomm Snapdragon WLAN firmware allows attackers to cause a transient denial of service via malformed wireless frames.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-47403?
CVE-2025-47403 is a medium-severity denial of service vulnerability in Qualcomm Ar8035 Firmware, published on 4 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Transient DOS when processing a malformed Fast Transition response frame with an invalid header structure during wireless roaming.
Which versions are affected by CVE-2025-47403?
It affects 257 products.
Products include Qualcomm Ar8035 Firmware, Qualcomm Cologne Firmware, Qualcomm Cq7790 Firmware, Qualcomm Cq8725s Firmware, Qualcomm Cq8750m Firmware, Qualcomm Csr8811 Firmware and 251 more.
How do I fix CVE-2025-47403?
No fix has been published for CVE-2025-47403 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-47403 being exploited?
There is no known exploitation of CVE-2025-47403 in the wild and no public exploit code.
Other vulnerabilities in Qualcomm Ar8035 Firmware
- CVE-2023-33106 Qualcomm Multiple Chipsets Use of Out-of-Range Pointer Offset
- CVE-2024-45569 Improper Validation of Array Index in WLAN Host Communication
- CVE-2024-21473 Improper Input Validation in WIN SON
- CVE-2023-28582 Buffer Copy Without Checking Size of Input in Data Modem
- CVE-2023-43552 Use After Free in WLAN Host Communication
Sources
Also known as GHSA-w77j-cqm5-vgh4.