# CVE-2021-1905: Qualcomm Multiple Chipsets Use-After-Free Vulnerability

> CVE-2021-1905: Qualcomm Multiple Chipsets Use-After-Free Vulnerability. CVSS 8.4 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2021-1905
Last updated: 2025-10-21T23:25:46Z

- Published: 2021-05-07 09:10 UTC · Updated: 2025-10-21 23:25 UTC · Assigner: qualcomm
- CVSS: 8.4 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS: 1.5%, 75th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2021-11-03, federal due date 2022-05-03, ransomware use: Unknown

## 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

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Qualcomm, Inc.: Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2021-1905)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2021-1905)
- [https://www.qualcomm.com/company/product-security/bulletins/may-2021-bulletin](https://www.qualcomm.com/company/product-security/bulletins/may-2021-bulletin)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2021-1905 · Markdown: https://rewindex.com/cve/CVE-2021-1905.md · JSON: https://rewindex.com/api/v1/cves/CVE-2021-1905 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:11:12.572Z