CVE-2023-21643Network attack vector

Memory corruption via untrusted system-call pointer

Published Aug 8, 2023 · Updated Aug 2, 2024

Memory corruption in Qualcomm Snapdragon Auto chipsets allows remote authenticated users to corrupt memory during a system call. Automotive code dereferences an untrusted pointer supplied during that call, but Qualcomm has not identified the affected function or the operation using the pointer. A low-privileged network context is required, and the documented consequence is memory corruption across a security boundary; exact post-corruption behavior is undisclosed.

CVSS severity9.1
Critical
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in Qualcomm Snapdragon Auto chipsets allows remote authenticated users to corrupt memory during a system call. Automotive code dereferences an untrusted pointer supplied during that call, but Qualcomm has not identified the affected function or the operation using the pointer. A low-privileged network context is required, and the documented consequence is memory corruption across a security boundary; exact post-corruption behavior is undisclosed.

The record

CVE
CVE-2023-21643
Published
Aug 8, 2023
Updated
Aug 2, 2024
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-822, CAPEC-129
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=APQ8064AU
  2. Affected versionversion=APQ8096AU
  3. Affected versionversion=MSM8996AU
  4. Affected versionversion=QAM8295P
  5. Affected versionversion=QCA6564A
  6. Affected versionversion=QCA6564AU
  7. Affected versionversion=QCA6574A
  8. Affected versionversion=QCA6574AU
  9. Affected versionversion=QCA6584AU
  10. Affected versionversion=QCA6595
  11. Affected versionversion=QCA6595AU
  12. Affected versionversion=QCA6696
  13. Affected versionversion=SA6145P
  14. Affected versionversion=SA6150P
  15. Affected versionversion=SA6155
  16. Affected versionversion=SA6155P
  17. Affected versionversion=SA8145P
  18. Affected versionversion=SA8150P
  19. Affected versionversion=SA8155
  20. Affected versionversion=SA8155P
  21. Affected versionversion=SA8195P
  22. Affected versionversion=SA8295P
  23. Affected versionversion=SA8540P
  24. Affected versionversion=SA9000P

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Qualcomm · Snapdragonversion=APQ8064AU; version=APQ8096AU; version=MSM8996AU; version=QAM8295P; version=QCA6564A; version=QCA6564AU; version=QCA6574A; version=QCA6574AU; version=QCA6584AU; version=QCA6595; version=QCA6595AU; version=QCA6696; version=SA6145P; version=SA6150P; version=SA6155; version=SA6155P; version=SA8145P; version=SA8150P; version=SA8155; version=SA8155P; version=SA8195P; version=SA8295P; version=SA8540P; version=SA9000P

Published CVSS scores

9.1Qualcomm, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-822Untrusted Pointer Dereference
CAPEC-129Pointer Manipulation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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