CVE-2025-21459 Buffer Over-read in WLAN Host Communication
A buffer over-read in Qualcomm WLAN host communication allows attackers to cause a transient denial of service via malformed ML IE parsing.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-21459?
CVE-2025-21459 is a high-severity denial of service vulnerability in Qualcomm Ar8035 Firmware, published on 6 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Transient DOS while parsing per STA profile in ML IE.
Which versions are affected by CVE-2025-21459?
It affects 124 products.
Products include Qualcomm Ar8035 Firmware, Qualcomm Fastconnect 6700 Firmware, Qualcomm Fastconnect 6900 Firmware, Qualcomm Fastconnect 7800 Firmware, Qualcomm Flight Rb5 5g Firmware, Qualcomm Qam8255p Firmware and 118 more.
How do I fix CVE-2025-21459?
Apply the vendor's patch.
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-2025-21459 being exploited?
There is no known exploitation of CVE-2025-21459 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 3930736, A-394100826, ASB-A-394100826, GHSA-5587-5jwr-xc28.