What is CVE-2026-21382?

CVE-2026-21382 is a high-severity vulnerability in Qualcomm, Inc. Snapdragon, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.8/10. Published 2026-04-06.

How severe is CVE-2026-21382?

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

Buffer overflow in Qualcomm, Inc. Snapdragon

CVE-2026-21382

Memory Corruption when handling power management requests with improperly sized input/output buffers.

Vulnerability class: Buffer Overflow

EPSS: 0.000 (3.0th 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, Inc. Snapdragon — versions Cologne, FastConnect 6900, FastConnect 7800

Weakness classification (CWE)

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

References

docs.qualcomm.com/product/publicresources/securitybulletin/april-2026-bulletin…

Frequently asked questions

What is CVE-2026-21382?: CVE-2026-21382 is a high-severity vulnerability in Qualcomm, Inc. Snapdragon, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.8/10. Published 2026-04-06.
How severe is CVE-2026-21382?: High severity. CVSS v3 base score is 7.8 out of 10.