What is CVE-2021-1918?

CVE-2021-1918 is a medium-severity vulnerability in Qualcomm Qca6391, classified under Exposure of Resource to Wrong Sphere. CVSS score: 6.5/10. Published 2022-01-03.

How severe is CVE-2021-1918?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Qualcomm Qca6391

CVE-2021-1918

Improper handling of resource allocation in virtual machines can lead to information exposure in Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile

Published 2022-01-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.001 (3.0th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 3.0% 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-668 — Exposure of Resource to Wrong Sphere

References

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

Frequently asked questions

What is CVE-2021-1918?: CVE-2021-1918 is a medium-severity vulnerability in Qualcomm Qca6391, classified under Exposure of Resource to Wrong Sphere. CVSS score: 6.5/10. Published 2022-01-03.
How severe is CVE-2021-1918?: Medium severity. CVSS v3 base score is 6.5 out of 10.