What is CVE-2021-30311?

CVE-2021-30311 is a high-severity vulnerability in Qualcomm Ar8035, classified under Improper Validation of Array Index. CVSS score: 7.8/10. Published 2022-01-13.

How severe is CVE-2021-30311?

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

Vulnerability in Qualcomm Ar8035

CVE-2021-30311

Possible heap overflow due to lack of index validation before allocating and writing to heap buffer in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile

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

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.

EPSS exploit prediction

EPSS: 0.002 (4.2th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-129 — Improper Validation of Array Index

References

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

Frequently asked questions

What is CVE-2021-30311?: CVE-2021-30311 is a high-severity vulnerability in Qualcomm Ar8035, classified under Improper Validation of Array Index. CVSS score: 7.8/10. Published 2022-01-13.
How severe is CVE-2021-30311?: High severity. CVSS v3 base score is 7.8 out of 10.