What is CVE-2026-21367?

CVE-2026-21367 is a high-severity vulnerability in Qualcomm, Inc. Snapdragon, classified under Buffer Over-read. CVSS score: 7.6/10. Published 2026-04-06.

How severe is CVE-2026-21367?

High severity. CVSS v3 base score is 7.6 out of 10.

Vulnerability in Qualcomm, Inc. Snapdragon

CVE-2026-21367

Transient DOS when processing nonstandard FILS Discovery Frames with out-of-range action sizes during initial scans.

EPSS: 0.000 (10.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H.

Affected products

Qualcomm, Inc. Snapdragon — versions AR8035, Cologne, CSR8811

Weakness classification (CWE)

CWE-126 — Buffer Over-read

References

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

Frequently asked questions

What is CVE-2026-21367?: CVE-2026-21367 is a high-severity vulnerability in Qualcomm, Inc. Snapdragon, classified under Buffer Over-read. CVSS score: 7.6/10. Published 2026-04-06.
How severe is CVE-2026-21367?: High severity. CVSS v3 base score is 7.6 out of 10.