What is CVE-2026-21370?

CVE-2026-21370 is a medium-severity vulnerability in Qualcomm, Inc. Snapdragon, classified under Out-of-bounds Write. CVSS score: 5.3/10. Published 2026-07-06.

How severe is CVE-2026-21370?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Buffer overflow in Qualcomm, Inc. Snapdragon

CVE-2026-21370

Memory Corruption when validating input batch size and buffer plane count exceeds maximum allowed values.

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L.

Affected products

Qualcomm, Inc. Snapdragon — versions FastConnect 6700, FastConnect 6900, FastConnect 7800

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

product-security@qualcomm.com

Frequently asked questions

What is CVE-2026-21370?: CVE-2026-21370 is a medium-severity vulnerability in Qualcomm, Inc. Snapdragon, classified under Out-of-bounds Write. CVSS score: 5.3/10. Published 2026-07-06.
How severe is CVE-2026-21370?: Medium severity. CVSS v3 base score is 5.3 out of 10.