---
title: "CVE-2023-33063: Qualcomm Multiple Chipsets Use-After-Free Vulnerability"
url: https://erroneo.us/security/cve/CVE-2023-33063/
description: "CVE-2023-33063 (Qualcomm Multiple Chipsets): Exploited in the wild (CISA KEV). Memory corruption in DSP Services during a remote call from HLOS to DSP."
type: vulnerability-record
section: "Security Digest"
date_published: 2023-12-05
date_modified: 2025-10-21
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2023-33063"
kev: true
cvss: 7.8
epss: 0.00672
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2023-33063: Qualcomm Multiple Chipsets Use-After-Free Vulnerability

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run Qualcomm Multiple Chipsets. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2023-12-05, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2023-12-26 ; treat that as the outer limit, not the target.
- EPSS 0.7% , percentile 51: FIRST’s model estimates a 0.7% chance of exploitation activity in the next 30 days, higher than 51% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Needs local access needed. Lower urgency for most teams unless an attacker could already run code on the machine.

## What it is

Memory corruption in DSP Services during a remote call from HLOS to DSP.

## Affected products (CVE record)

- Qualcomm, Inc. Snapdragon: 315 5G IoT Modem, APQ8017, AQT1000, AR8031, AR8035, AR9380, C-V2X 9150, CSR8811, CSRA6620, CSRA6640, CSRB31024, FastConnect 6200

## Severity

- qualcomm CVSS 3.1: 7.8 `CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: added 2023-12-05; federal due date 2023-12-26. Known ransomware use: Unknown.
- CISA required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
- CISA SSVC assessment: exploitation active , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.67% probability of exploitation activity in the next 30 days; percentile 51.

## Sources

- [Listed in CISA KEV notes (git.codelinaro.org)](https://git.codelinaro.org/clo/la/kernel/msm-5.15/-/commit/2643808ddbedfaabbb334741873fb2857f78188a)
- [Listed in CISA KEV notes (git.codelinaro.org)](https://git.codelinaro.org/clo/la/kernel/msm-4.14/-/commit/d43222efda5a01c9804d74a541e3c1be9b7fe110)
- [CVE.org record CVE-2023-33063](https://www.cve.org/CVERecord?id=CVE-2023-33063)
- [NVD entry CVE-2023-33063](https://nvd.nist.gov/vuln/detail/CVE-2023-33063)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-33063)
- [qualcomm.com](https://www.qualcomm.com/company/product-security/bulletins/december-2023-bulletin)

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Source page: https://erroneo.us/security/cve/CVE-2023-33063/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt