What is CVE-2021-1974?

CVE-2021-1974 is a high-severity vulnerability in Qualcomm Aqt1000, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2021-09-09.

How severe is CVE-2021-1974?

High severity. CVSS v3 base score is 7.5 out of 10.

Out-of-bounds Read in Qualcomm Aqt1000

CVE-2021-1974

Possible buffer over read due to lack of alignment between map or unmap length of IPA SMMU and WLAN SMMU in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking

Vulnerability class: Buffer Overflow

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

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.006 (46.2th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

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

Frequently asked questions

What is CVE-2021-1974?: CVE-2021-1974 is a high-severity vulnerability in Qualcomm Aqt1000, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2021-09-09.
How severe is CVE-2021-1974?: High severity. CVSS v3 base score is 7.5 out of 10.