CVE-2023-21671

Memory corruption via Sectools Fuse comparison syscall

Published Nov 7, 2023 · Updated Feb 27, 2025

Memory corruption in Qualcomm Snapdragon Core allows local users to compromise confidentiality, integrity, and availability through a syscall. The Sectools Fuse comparison syscall mishandles untrusted input, but Qualcomm has not disclosed the specific validation failure or memory operation. Local code execution on an affected chipset is required; no user interaction is needed, and successful exploitation crosses a security boundary.

CVSS severity9.3
Critical
EPSS probability0.14%
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 Core allows local users to compromise confidentiality, integrity, and availability through a syscall. The Sectools Fuse comparison syscall mishandles untrusted input, but Qualcomm has not disclosed the specific validation failure or memory operation. Local code execution on an affected chipset is required; no user interaction is needed, and successful exploitation crosses a security boundary.

The record

CVE
CVE-2023-21671
Published
Nov 7, 2023
Updated
Feb 27, 2025
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-20, T1068
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 7, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 27, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=FastConnect 6700
  2. Affected versionversion=FastConnect 6900
  3. Affected versionversion=QCA6391
  4. Affected versionversion=QCM6490
  5. Affected versionversion=QCS6490
  6. Affected versionversion=QSM8350
  7. Affected versionversion=Qualcomm Video Collaboration VC3 Platform
  8. Affected versionversion=SD888
  9. Affected versionversion=SM7315
  10. Affected versionversion=SM7325P
  11. Affected versionversion=Snapdragon 778G 5G Mobile Platform
  12. Affected versionversion=Snapdragon 778G+ 5G Mobile Platform (SM7325-AE)
  13. Affected versionversion=Snapdragon 780G 5G Mobile Platform
  14. Affected versionversion=Snapdragon 782G Mobile Platform (SM7325-AF)
  15. Affected versionversion=Snapdragon 7c+ Gen 3 Compute
  16. Affected versionversion=Snapdragon 888 5G Mobile Platform
  17. Affected versionversion=Snapdragon 888+ 5G Mobile Platform (SM8350-AC)
  18. Affected versionversion=WCD9370
  19. Affected versionversion=WCD9375
  20. Affected versionversion=WCD9380
  21. Affected versionversion=WCD9385
  22. Affected versionversion=WCN6740
  23. Affected versionversion=WSA8830
  24. Affected versionversion=WSA8835

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Qualcomm · Snapdragonversion=FastConnect 6700; version=FastConnect 6900; version=QCA6391; version=QCM6490; version=QCS6490; version=QSM8350; version=Qualcomm Video Collaboration VC3 Platform; version=SD888; version=SM7315; version=SM7325P; version=Snapdragon 778G 5G Mobile Platform; version=Snapdragon 778G+ 5G Mobile Platform (SM7325-AE); version=Snapdragon 780G 5G Mobile Platform; version=Snapdragon 782G Mobile Platform (SM7325-AF); version=Snapdragon 7c+ Gen 3 Compute; version=Snapdragon 888 5G Mobile Platform; version=Snapdragon 888+ 5G Mobile Platform (SM8350-AC); version=WCD9370; version=WCD9375; version=WCD9380; version=WCD9385; version=WCN6740; version=WSA8830; version=WSA8835

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.3Qualcomm, Inc.CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1068Exploitation for Privilege Escalation

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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