What is CVE-2025-21462?

CVE-2025-21462 is a high-severity vulnerability in Qualcomm Fastconnect 6900, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2025-05-06.

How severe is CVE-2025-21462?

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

Buffer overflow in Qualcomm Fastconnect 6900

CVE-2025-21462

Memory corruption while processing an IOCTL request, when buffer significantly exceeds the command argument limit.

Vulnerability class: Buffer Overflow

EPSS: 0.001 (0.7th 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_6900
Qualcomm Fastconnect_6900_firmware
Qualcomm Fastconnect_7800
Qualcomm Fastconnect_7800_firmware
Qualcomm Sa4150p
Qualcomm Sa4150p_firmware
Qualcomm Sa4155p
Qualcomm Sa4155p_firmware
Qualcomm Sa6155p
Qualcomm Sa6155p_firmware

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

product-security@qualcomm.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-21462?: CVE-2025-21462 is a high-severity vulnerability in Qualcomm Fastconnect 6900, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2025-05-06.
How severe is CVE-2025-21462?: High severity. CVSS v3 base score is 7.8 out of 10.