What is CVE-2021-35090?

CVE-2021-35090 is a critical-severity vulnerability in Qualcomm Aqt1000, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 9.3/10. Published 2022-06-14.

How severe is CVE-2021-35090?

Critical severity. CVSS v3 base score is 9.3 out of 10.

Vulnerability in Qualcomm Aqt1000

CVE-2021-35090

Possible hypervisor memory corruption due to TOC TOU race condition when updating address mappings in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

Published 2022-06-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.3 (Critical). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.001 (1.6th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 1.6% 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-367 — Time-of-check Time-of-use (TOCTOU) Race Condition

References

www.qualcomm.com/company/product-security/bulletins/may-2022-bulletin (Vendor Advisory)

Frequently asked questions

What is CVE-2021-35090?: CVE-2021-35090 is a critical-severity vulnerability in Qualcomm Aqt1000, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 9.3/10. Published 2022-06-14.
How severe is CVE-2021-35090?: Critical severity. CVSS v3 base score is 9.3 out of 10.