What is CVE-2026-21383?

CVE-2026-21383 is a high-severity vulnerability in Qualcomm, Inc. Snapdragon, classified under Reusing a Nonce, Key Pair in Encryption. CVSS score: 7.1/10. Published 2026-07-06.

How severe is CVE-2026-21383?

High severity. CVSS v3 base score is 7.1 out of 10.

Vulnerability in Qualcomm, Inc. Snapdragon

CVE-2026-21383

Cryptographic Issue when using a static initialization vector for AES-GCM key wrapping, which requires a unique value for each call to ensure security.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Affected products

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

Weakness classification (CWE)

CWE-323 — Reusing a Nonce, Key Pair in Encryption

References

product-security@qualcomm.com

Frequently asked questions

What is CVE-2026-21383?: CVE-2026-21383 is a high-severity vulnerability in Qualcomm, Inc. Snapdragon, classified under Reusing a Nonce, Key Pair in Encryption. CVSS score: 7.1/10. Published 2026-07-06.
How severe is CVE-2026-21383?: High severity. CVSS v3 base score is 7.1 out of 10.