What is CVE-2025-27031?

CVE-2025-27031 is a high-severity vulnerability in Qualcomm Fastconnect 6700, classified under Use After Free. CVSS score: 7.8/10. Published 2025-06-03.

How severe is CVE-2025-27031?

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

Use After Free in Qualcomm Fastconnect 6700

CVE-2025-27031

memory corruption while processing IOCTL commands, when the buffer in write loopback mode is accessed after being freed.

Vulnerability class: Use-After-Free

EPSS: 0.001 (0.3th 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 Fastconnect_6700
Qualcomm Fastconnect_6700_firmware
Qualcomm Fastconnect_6900
Qualcomm Fastconnect_6900_firmware
Qualcomm Fastconnect_7800
Qualcomm Fastconnect_7800_firmware
Qualcomm Qcm5430
Qualcomm Qcm5430_firmware
Qualcomm Qcm6490
Qualcomm Qcm6490_firmware

Weakness classification (CWE)

CWE-416 — Use After Free

References

product-security@qualcomm.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-27031?: CVE-2025-27031 is a high-severity vulnerability in Qualcomm Fastconnect 6700, classified under Use After Free. CVSS score: 7.8/10. Published 2025-06-03.
How severe is CVE-2025-27031?: High severity. CVSS v3 base score is 7.8 out of 10.