CVE-2022-33299Network attack vector

Service interruption via zero-length Attribute Protocol PDU

Published Jan 6, 2023 · Updated Apr 9, 2025

Null pointer dereference in Qualcomm Snapdragon Bluetooth HOST allows remote attackers to cause a transient service interruption. The host stack dereferences a null pointer when it receives an Attribute Protocol PDU whose data field has zero length. No privileges or user interaction are required; the documented consequence is temporary loss of availability, not data disclosure or modification.

CVSS severity7.5
High
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Null pointer dereference in Qualcomm Snapdragon Bluetooth HOST allows remote attackers to cause a transient service interruption. The host stack dereferences a null pointer when it receives an Attribute Protocol PDU whose data field has zero length. No privileges or user interaction are required; the documented consequence is temporary loss of availability, not data disclosure or modification.

The record

CVE
CVE-2022-33299
Published
Jan 6, 2023
Updated
Apr 9, 2025
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-476, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 9, 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=APQ8017
  2. Affected versionversion=APQ8096AU
  3. Affected versionversion=AR8031
  4. Affected versionversion=CSRA6620
  5. Affected versionversion=CSRA6640
  6. Affected versionversion=CSRB31024
  7. Affected versionversion=MDM9150
  8. Affected versionversion=MDM9206
  9. Affected versionversion=MDM9250
  10. Affected versionversion=MDM9607
  11. Affected versionversion=MDM9628
  12. Affected versionversion=MDM9640
  13. Affected versionversion=MDM9650
  14. Affected versionversion=MSM8996AU
  15. Affected versionversion=QCA6174A
  16. Affected versionversion=QCA6175A
  17. Affected versionversion=QCA6564A
  18. Affected versionversion=QCA6564AU
  19. Affected versionversion=QCA6574
  20. Affected versionversion=QCA6574A
  21. Affected versionversion=QCA6574AU
  22. Affected versionversion=QCA6584
  23. Affected versionversion=QCA6584AU
  24. Affected versionversion=QCA6595
  25. Affected versionversion=QCA6595AU
  26. Affected versionversion=QCA6696
  27. Affected versionversion=QCA9367
  28. Affected versionversion=QCA9377
  29. Affected versionversion=QCN9074
  30. Affected versionversion=QCS405
  31. Affected versionversion=SA415M
  32. Affected versionversion=SA515M
  33. Affected versionversion=SD626
  34. Affected versionversion=SDX20
  35. Affected versionversion=SDX20M
  36. Affected versionversion=SDX55
  37. Affected versionversion=WCD9326
  38. Affected versionversion=WCD9335
  39. Affected versionversion=WCD9360
  40. Affected versionversion=WCN3660B
  41. Affected versionversion=WCN3680B
  42. Affected versionversion=WCN3980
  43. Affected versionversion=WCN3998
  44. Affected versionversion=WSA8815

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Qualcomm · Snapdragonversion=APQ8017; version=APQ8096AU; version=AR8031; version=CSRA6620; version=CSRA6640; version=CSRB31024; version=MDM9150; version=MDM9206; version=MDM9250; version=MDM9607; version=MDM9628; version=MDM9640; version=MDM9650; version=MSM8996AU; version=QCA6174A; version=QCA6175A; version=QCA6564A; version=QCA6564AU; version=QCA6574; version=QCA6574A; version=QCA6574AU; version=QCA6584; version=QCA6584AU; version=QCA6595; version=QCA6595AU; version=QCA6696; version=QCA9367; version=QCA9377; version=QCN9074; version=QCS405; version=SA415M; version=SA515M; version=SD626; version=SDX20; version=SDX20M; version=SDX55; version=WCD9326; version=WCD9335; version=WCD9360; version=WCN3660B; version=WCN3680B; version=WCN3980; version=WCN3998; version=WSA8815

Published CVSS scores

7.5Qualcomm, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

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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