What is CVE-2021-1927?

CVE-2021-1927 is a high-severity vulnerability in Qualcomm Apq8009, classified under Use After Free. CVSS score: 8.4/10. Published 2021-05-07.

How severe is CVE-2021-1927?

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

Use After Free in Qualcomm Apq8009

CVE-2021-1927

Possible use after free due to lack of null check while memory is being freed in FastRPC driver in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking

Vulnerability class: Use-After-Free

Published 2021-05-07 · 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: 0.002 (4.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.4% 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-416 — Use After Free

References

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

Frequently asked questions

What is CVE-2021-1927?: CVE-2021-1927 is a high-severity vulnerability in Qualcomm Apq8009, classified under Use After Free. CVSS score: 8.4/10. Published 2021-05-07.
How severe is CVE-2021-1927?: High severity. CVSS v3 base score is 8.4 out of 10.