CVE-2025-21481 Buffer Copy Without Checking Size of Input in HLOS
A buffer overflow in Qualcomm Snapdragon trusted applications allows attackers to execute arbitrary code or escalate privileges.
- 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-2025-21481?
CVE-2025-21481 is a high-severity memory corruption vulnerability in Qualcomm 315 5g Iot Modem Firmware, published on 24 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Memory corruption while performing private key encryption in trusted application.
Weakness: CWE-120
Which versions are affected by CVE-2025-21481?
It affects 249 products.
Products include Qualcomm 315 5g Iot Modem Firmware, Qualcomm Aqt1000 Firmware, Qualcomm Ar8031 Firmware, Qualcomm Ar8035 Firmware, Qualcomm C-V2x 9150 Firmware, Qualcomm Csra6620 Firmware and 243 more.
How do I fix CVE-2025-21481?
No fix has been published for CVE-2025-21481 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-2025-21481 being exploited?
There is no known exploitation of CVE-2025-21481 in the wild and no public exploit code.
Other vulnerabilities in Qualcomm 315 5g Iot Modem Firmware
- CVE-2023-33107 Qualcomm Multiple Chipsets Integer Overflow
- CVE-2023-33063 Qualcomm Multiple Chipsets Use-After-Free
- CVE-2025-27034 Improper Validation of Array Index in Multi-Mode Call Processor
- CVE-2023-22388 Use of Out-of-range Pointer Offset in Multi-mode Call Processor
- CVE-2023-28578 Improper Input Validation in Services
Sources
Also known as GHSA-2324-r4hv-6h34.