What is CVE-2026-21381?

CVE-2026-21381 is a high-severity vulnerability in Qualcomm Ar8035, classified under Buffer Over-read. CVSS score: 7.6/10. Published 2026-04-06.

How severe is CVE-2026-21381?

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

Vulnerability in Qualcomm Ar8035

CVE-2026-21381

Transient DOS when receiving a service data frame with excessive length during device matching over a neighborhood awareness network protocol connection.

EPSS: 0.001 (4.6th 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 Ar8035
Qualcomm Ar8035_firmware
Qualcomm Cologne
Qualcomm Cologne_firmware
Qualcomm Fastconnect_6200
Qualcomm Fastconnect_6200_firmware
Qualcomm Fastconnect_6700
Qualcomm Fastconnect_6700_firmware
Qualcomm Fastconnect_6900
Qualcomm Fastconnect_6900_firmware

Weakness classification (CWE)

CWE-126 — Buffer Over-read

References

product-security@qualcomm.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-21381?: CVE-2026-21381 is a high-severity vulnerability in Qualcomm Ar8035, classified under Buffer Over-read. CVSS score: 7.6/10. Published 2026-04-06.
How severe is CVE-2026-21381?: High severity. CVSS v3 base score is 7.6 out of 10.