What is CVE-2025-47321?

CVE-2025-47321 is a high-severity vulnerability in Qualcomm Ar8031, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.8/10. Published 2025-12-18.

How severe is CVE-2025-47321?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Qualcomm Ar8031

CVE-2025-47321

Memory corruption while copying packets received from unix clients.

Vulnerability class: Buffer Overflow

EPSS: 0.001 (0.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Qualcomm Ar8031
Qualcomm Ar8031_firmware
Qualcomm Ar8035
Qualcomm Ar8035_firmware
Qualcomm Csra6620
Qualcomm Csra6620_firmware
Qualcomm Csra6640
Qualcomm Csra6640_firmware
Qualcomm Fastconnect_6200
Qualcomm Fastconnect_6200_firmware

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

product-security@qualcomm.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-47321?: CVE-2025-47321 is a high-severity vulnerability in Qualcomm Ar8031, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.8/10. Published 2025-12-18.
How severe is CVE-2025-47321?: High severity. CVSS v3 base score is 7.8 out of 10.