CVE-2025-21456
Use After Free in NPU
Memory corruption while processing IOCTL command when multiple threads are called to map/unmap buffer concurrently.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Use After Free in NPU
Memory corruption while processing IOCTL command when multiple threads are called to map/unmap buffer concurrently.
- Record
CVE-2025-21456- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-416
- Updated
- 2026-11-03
EUVDEUVD-2025-23808
Memory corruption while processing IOCTL command when multiple threads are called to map/unmap buffer concurrently.
- Record
EUVD-2025-23808- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-vv64-cx48-gwwp
Memory corruption while processing IOCTL command when multiple threads are called to map/unmap...
Memory corruption while processing IOCTL command when multiple threads are called to map/unmap buffer concurrently.
- Record
GHSA-vv64-cx48-gwwp- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-416
- Updated
- 2026-11-02
NVD
Memory corruption while processing IOCTL command when multiple threads are called to map/unmap buffer concurrently.
- Record
CVE-2025-21456- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-416
- Updated
- 2026-11-02
Affected products
- qualcomm ar8035 firmware
- qualcomm c-v2x 9150 firmware
- qualcomm fastconnect 6900 firmware
- qualcomm fastconnect 7800 firmware
- qualcomm qam8255p firmware
- qualcomm qam8295p firmware
- qualcomm qam8650p firmware
- qualcomm qam8775p firmware
- qualcomm qca6174a firmware
- qualcomm qca6574au firmware
- qualcomm qca6584au firmware
- qualcomm qca6696 firmware
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- qualcomm qca6698aq firmware
- qualcomm qca6797aq firmware
- qualcomm qca8081 firmware
- qualcomm qca8337 firmware
- qualcomm qcc710 firmware
- qualcomm qcn6224 firmware
- qualcomm qcn6274 firmware
- qualcomm qcs410 firmware
- qualcomm qcs610 firmware
- qualcomm qfw7114 firmware
- qualcomm qfw7124 firmware
- qualcomm sa6145p firmware
- qualcomm sa6150p firmware
- qualcomm sa6155p firmware
- qualcomm sa7255p firmware
- qualcomm sa7775p firmware
- qualcomm sa8145p firmware
- qualcomm sa8150p firmware
- qualcomm sa8155p firmware
- qualcomm sa8195p firmware
- qualcomm sa8255p firmware
- qualcomm sa8295p firmware
- qualcomm sa8530p firmware
- qualcomm sa8540p firmware
- qualcomm sa8620p firmware
- qualcomm sa8650p firmware
- qualcomm sa8775p firmware
- qualcomm sa9000p firmware
- qualcomm snapdragon 888\+ 5g mobile platform \(sm8350-ac\) firmware
- qualcomm snapdragon 888 5g mobile platform firmware
- qualcomm snapdragon auto 5g modem-rf gen 2 firmware
- qualcomm snapdragon w5\+ gen 1 wearable platform firmware
- qualcomm snapdragon x72 5g modem-rf system firmware
- qualcomm snapdragon x75 5g modem-rf system firmware
- qualcomm sw5100 firmware
- qualcomm sw5100p firmware
- qualcomm video collaboration vc1 platform firmware
- qualcomm video collaboration vc3 platform firmware
- qualcomm wcd9340 firmware
- qualcomm wcd9341 firmware
- qualcomm wcd9370 firmware
- qualcomm wcd9380 firmware
- qualcomm wcd9385 firmware
- qualcomm wcn3660b firmware
- qualcomm wcn3680b firmware
- qualcomm wcn3950 firmware
- qualcomm wcn3980 firmware
- qualcomm wcn3988 firmware
- qualcomm wsa8810 firmware
- qualcomm wsa8815 firmware
- qualcomm wsa8830 firmware
- qualcomm wsa8835 firmware
- qualcomm, inc. snapdragon
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | CVE List, EUVD | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-21456 is a high vulnerability (CVSS 7.8) in Qualcomm Ar8035 Firmware, published August 6, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.10%, the 0th percentile. No source names a fixed version.