CVE-2021-1905

HIGH8.4

CISA KEV

Published 2021-05-07 · Updated 2026-06-17 · Source product-security@qualcomm.com

Summary

CVE-2021-1905 is a high-severity (CVSS 8.4) vulnerability in Qualcomm Multiple Chipsets. CISA added it to the Known Exploited Vulnerabilities catalog on November 3, 2021, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by May 3, 2022. CISA does not currently list it as used in ransomware campaigns. Qualcomm has 12 vulnerabilities in the KEV catalog, 0 of them linked to ransomware.

All 12 known-exploited Qualcomm vulnerabilities →

Description

Possible use after free due to improper handling of memory mapping of multiple processes simultaneously. in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables

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

CWE-416CWE-416

CISA Known-Exploited Vulnerability

Product: Qualcomm — Multiple Chipsets

Name: Qualcomm Multiple Chipsets Use-After-Free Vulnerability

Date added: 2021-11-03 · Due: 2022-05-03

Required action: Apply updates per vendor instructions.

References

View on NVD

More exploited Qualcomm vulnerabilities

Most recently added to CISA KEV

CVE-2026-21385
Multiple Chipsets — Qualcomm Multiple Chipsets Memory Corruption Vulnerability
added 2026-03-03
CVE-2025-21479
Multiple Chipsets — Qualcomm Multiple Chipsets Incorrect Authorization Vulnerability
added 2025-06-03
CVE-2025-21480
Multiple Chipsets — Qualcomm Multiple Chipsets Incorrect Authorization Vulnerability
added 2025-06-03
CVE-2025-27038
Multiple Chipsets — Qualcomm Multiple Chipsets Use-After-Free Vulnerability
added 2025-06-03
CVE-2024-43047
Multiple Chipsets — Qualcomm Multiple Chipsets Use-After-Free Vulnerability
added 2024-10-08
CVE-2023-33107
Multiple Chipsets — Qualcomm Multiple Chipsets Integer Overflow Vulnerability
added 2023-12-05

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