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Vulnerability record · CVE-2021-1921 · published 12 November 2021

CVE-2021-1921: Qualcomm aqt1000 firmware toctou race condition vulnerability

Qualcomm · Aqt1000 Firmware

Possible memory corruption due to Improper handling of hypervisor unmap operations for concurrent memory operations in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile

7.0 CVSS 3.1 High EPSS 0.11% · top 98.9% CWE-367 · TOCTOU race condition
7.0CVSS 3.1 base score, v2 6.9
0.11%EPSS exploitation probability, 30 days
NoNot in CISA KEV
57Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Possible memory corruption due to Improper handling of hypervisor unmap operations for concurrent memory operations in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

57 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.qualcomm.com/company/product-security/bulletins/november-2021-bulletin Vendor Advisory
https://www.qualcomm.com/company/product-security/bulletins/november-2021-bulletin Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-1921), CISA KEV, FIRST EPSS (scores of 2026-10-05). This page is refreshed as NVD updates the record.