CVE-2025-21445

Memory corruption via unchecked shared-queue result copy

Published Jul 8, 2025 · Updated Jul 8, 2025

Classic buffer overflow in Qualcomm Snapdragon Data HLOS-QX allows local users to corrupt memory through a shared transmission queue. The component copies a result into a transmission queue shared by the virtual machine and host without validating the destination size. Low privileges on the device are required; the resulting corruption can compromise confidentiality, integrity, and availability.

CVSS severity7.8
High
EPSS probability0.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Classic buffer overflow in Qualcomm Snapdragon Data HLOS-QX allows local users to corrupt memory through a shared transmission queue. The component copies a result into a transmission queue shared by the virtual machine and host without validating the destination size. Low privileges on the device are required; the resulting corruption can compromise confidentiality, integrity, and availability.

The record

CVE
CVE-2025-21445
Published
Jul 8, 2025
Updated
Jul 8, 2025
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-120
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 8, 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=QAM8255P
  2. Affected versionversion=QAM8295P
  3. Affected versionversion=QAM8620P
  4. Affected versionversion=QAM8650P
  5. Affected versionversion=QAM8775P
  6. Affected versionversion=QAMSRV1H
  7. Affected versionversion=QAMSRV1M
  8. Affected versionversion=QCA6574AU
  9. Affected versionversion=QCA6595
  10. Affected versionversion=QCA6595AU
  11. Affected versionversion=QCA6688AQ
  12. Affected versionversion=QCA6696
  13. Affected versionversion=QCA6698AQ
  14. Affected versionversion=QCA6797AQ
  15. Affected versionversion=SA7255P
  16. Affected versionversion=SA7775P
  17. Affected versionversion=SA8255P
  18. Affected versionversion=SA8295P
  19. Affected versionversion=SA8540P
  20. Affected versionversion=SA8620P
  21. Affected versionversion=SA8650P
  22. Affected versionversion=SA8770P
  23. Affected versionversion=SA8775P
  24. Affected versionversion=SA9000P
  25. Affected versionversion=SRV1H
  26. Affected versionversion=SRV1L
  27. Affected versionversion=SRV1M

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Qualcomm · Snapdragonversion=QAM8255P; version=QAM8295P; version=QAM8620P; version=QAM8650P; version=QAM8775P; version=QAMSRV1H; version=QAMSRV1M; version=QCA6574AU; version=QCA6595; version=QCA6595AU; version=QCA6688AQ; version=QCA6696; version=QCA6698AQ; version=QCA6797AQ; version=SA7255P; version=SA7775P; version=SA8255P; version=SA8295P; version=SA8540P; version=SA8620P; version=SA8650P; version=SA8770P; version=SA8775P; version=SA9000P; version=SRV1H; version=SRV1L; version=SRV1M

Published CVSS scores

7.8Qualcomm, Inc.CVSS: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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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