CVE-2025-21446 Buffer Over-read in WLAN Firmware
A buffer over-read in Qualcomm WLAN firmware allows attackers to cause a transient denial of service by sending crafted WLAN frames.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-21446?
CVE-2025-21446 is a high-severity denial of service vulnerability in Qualcomm Ar8035 Firmware, published on 8 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Transient DOS may occur when processing vendor-specific information elements while parsing a WLAN frame for BTM requests.
Which versions are affected by CVE-2025-21446?
It affects 240 products.
Products include Qualcomm Ar8035 Firmware, Qualcomm Ar9380 Firmware, Qualcomm Csr8811 Firmware, Qualcomm Fastconnect 6700 Firmware, Qualcomm Fastconnect 6800 Firmware, Qualcomm Fastconnect 6900 Firmware and 234 more.
How do I fix CVE-2025-21446?
No fix has been published for CVE-2025-21446 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-2025-21446 being exploited?
There is no known exploitation of CVE-2025-21446 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-vr8p-mwh4-q7pp.