What is CVE-2021-1939?

CVE-2021-1939 is a high-severity vulnerability in Qualcomm Apq8009, classified under NULL Pointer Dereference. CVSS score: 8.4/10. Published 2021-09-17.

How severe is CVE-2021-1939?

High severity. CVSS v3 base score is 8.4 out of 10.

NULL pointer dereference in Qualcomm Apq8009

CVE-2021-1939

Null pointer dereference occurs due to improper validation when the preemption feature enablement is toggled in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Wearables

Published 2021-09-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.001 (2.7th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 2.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

www.qualcomm.com/company/product-security/bulletins/august-2021-bulletin (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-1939?: CVE-2021-1939 is a high-severity vulnerability in Qualcomm Apq8009, classified under NULL Pointer Dereference. CVSS score: 8.4/10. Published 2021-09-17.
How severe is CVE-2021-1939?: High severity. CVSS v3 base score is 8.4 out of 10.