CVE-2025-27031

Memory corruption via freed loopback buffer

Published Jun 3, 2025 · Updated Jun 3, 2025

Use-after-free in Bluetooth HOST on affected Qualcomm Snapdragon platforms allows local users to corrupt memory through IOCTL commands. In write loopback mode, the IOCTL processing path accesses its buffer after freeing it, leaving a stale reference available to privileged local input. Low local privileges are required, and successful exploitation can compromise confidentiality, integrity, and availability without user interaction.

CVSS severity7.8
High
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Bluetooth HOST on affected Qualcomm Snapdragon platforms allows local users to corrupt memory through IOCTL commands. In write loopback mode, the IOCTL processing path accesses its buffer after freeing it, leaving a stale reference available to privileged local input. Low local privileges are required, and successful exploitation can compromise confidentiality, integrity, and availability without user interaction.

The record

CVE
CVE-2025-27031
Published
Jun 3, 2025
Updated
Jun 3, 2025
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-416
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 3, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 3, 2025Record 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=FastConnect 6700
  2. Affected versionversion=FastConnect 6900
  3. Affected versionversion=FastConnect 7800
  4. Affected versionversion=QCM5430
  5. Affected versionversion=QCM6490
  6. Affected versionversion=QCS5430
  7. Affected versionversion=QCS6490
  8. Affected versionversion=Qualcomm Video Collaboration VC3 Platform
  9. Affected versionversion=SC8380XP
  10. Affected versionversion=Snapdragon 7c+ Gen 3 Compute
  11. Affected versionversion=Snapdragon 8cx Gen 3 Compute Platform (SC8280XP-AB, BB)
  12. Affected versionversion=WCD9370
  13. Affected versionversion=WCD9375
  14. Affected versionversion=WCD9380
  15. Affected versionversion=WCD9385
  16. Affected versionversion=WSA8830
  17. Affected versionversion=WSA8835
  18. Affected versionversion=WSA8840
  19. Affected versionversion=WSA8845
  20. Affected versionversion=WSA8845H

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Qualcomm · Snapdragonversion=FastConnect 6700; version=FastConnect 6900; version=FastConnect 7800; version=QCM5430; version=QCM6490; version=QCS5430; version=QCS6490; version=Qualcomm Video Collaboration VC3 Platform; version=SC8380XP; version=Snapdragon 7c+ Gen 3 Compute; version=Snapdragon 8cx Gen 3 Compute Platform (SC8280XP-AB, BB); version=WCD9370; version=WCD9375; version=WCD9380; version=WCD9385; version=WSA8830; version=WSA8835; version=WSA8840; version=WSA8845; version=WSA8845H

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.

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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-416Use After Free

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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