What is CVE-2021-1900?

CVE-2021-1900 is a high-severity vulnerability in Qualcomm Apq8009, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 8.4/10. Published 2021-06-09.

How severe is CVE-2021-1900?

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

Is CVE-2021-1900 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Use After Free in Qualcomm Apq8009

CVE-2021-1900

Possible use after free in Display due to race condition while creating an external display in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables

Vulnerability class: Race Condition

Published 2021-06-09 · 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 (1.0th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 1st percentile — 1.0% 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)

Public proof-of-concept exploits

n0-traces/cve_

References

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

Frequently asked questions

What is CVE-2021-1900?: CVE-2021-1900 is a high-severity vulnerability in Qualcomm Apq8009, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 8.4/10. Published 2021-06-09.
How severe is CVE-2021-1900?: High severity. CVSS v3 base score is 8.4 out of 10.
Is CVE-2021-1900 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.