What is CVE-2021-30307?

CVE-2021-30307 is a high-severity vulnerability in Qualcomm Ar8035, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2022-01-13.

How severe is CVE-2021-30307?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Qualcomm Ar8035

CVE-2021-30307

Possible denial of service due to improper validation of DNS response when DNS client requests with PTR, NAPTR or SRV query type in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT

Published 2022-01-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.006 (44.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-617 — Reachable Assertion

References

www.qualcomm.com/company/product-security/bulletins/january-2022-bulletin (Vendor Advisory)

Frequently asked questions

What is CVE-2021-30307?: CVE-2021-30307 is a high-severity vulnerability in Qualcomm Ar8035, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2022-01-13.
How severe is CVE-2021-30307?: High severity. CVSS v3 base score is 7.5 out of 10.