CVE-2023-21656

Host memory corruption via unvalidated WMI event

Published Jun 6, 2023 · Updated Aug 2, 2024

Memory corruption in Qualcomm Snapdragon WLAN HOST allows local users to corrupt memory via a firmware-originated WMI event. The host-side WLAN handler processes the event without adequate input validation; Qualcomm has not disclosed the responsible function or invalid field. Exploitation requires local low-privileged access and can compromise data confidentiality, integrity, and service availability without user interaction.

CVSS severity7.8
High
EPSS probability0.12%
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 WLAN HOST allows local users to corrupt memory via a firmware-originated WMI event. The host-side WLAN handler processes the event without adequate input validation; Qualcomm has not disclosed the responsible function or invalid field. Exploitation requires local low-privileged access and can compromise data confidentiality, integrity, and service availability without user interaction.

The record

CVE
CVE-2023-21656
Published
Jun 6, 2023
Updated
Aug 2, 2024
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-20
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 6, 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

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=AR8035
  2. Affected versionversion=CSRA6620
  3. Affected versionversion=CSRA6640
  4. Affected versionversion=CSRB31024
  5. Affected versionversion=FastConnect 6200
  6. Affected versionversion=FastConnect 6700
  7. Affected versionversion=FastConnect 6800
  8. Affected versionversion=FastConnect 6900
  9. Affected versionversion=FastConnect 7800
  10. Affected versionversion=QAM8255P
  11. Affected versionversion=QAM8295P
  12. Affected versionversion=QAM8650P
  13. Affected versionversion=QAM8775P
  14. Affected versionversion=QCA6175A
  15. Affected versionversion=QCA6310
  16. Affected versionversion=QCA6320
  17. Affected versionversion=QCA6391
  18. Affected versionversion=QCA6426
  19. Affected versionversion=QCA6436
  20. Affected versionversion=QCA6554A
  21. Affected versionversion=QCA6564AU
  22. Affected versionversion=QCA6574
  23. Affected versionversion=QCA6574A
  24. Affected versionversion=QCA6574AU
  25. Affected versionversion=QCA6584AU
  26. Affected versionversion=QCA6595
  27. Affected versionversion=QCA6595AU
  28. Affected versionversion=QCA6678AQ
  29. Affected versionversion=QCA6696
  30. Affected versionversion=QCA6698AQ
  31. Affected versionversion=QCA6797AQ
  32. Affected versionversion=QCA8081
  33. Affected versionversion=QCA8337
  34. Affected versionversion=QCC2073
  35. Affected versionversion=QCC2076
  36. Affected versionversion=QCM4325
  37. Affected versionversion=QCM4490
  38. Affected versionversion=QCM6490
  39. Affected versionversion=QCN6024
  40. Affected versionversion=QCN9024
  41. Affected versionversion=QCS410
  42. Affected versionversion=QCS4490
  43. Affected versionversion=QCS610
  44. Affected versionversion=QCS6490
  45. Affected versionversion=QCS8550
  46. Affected versionversion=SA4150P
  47. Affected versionversion=SA4155P
  48. Affected versionversion=SA6145P
  49. Affected versionversion=SA6150P
  50. Affected versionversion=SA6155
  51. Affected versionversion=SA6155P
  52. Affected versionversion=SA8145P
  53. Affected versionversion=SA8150P
  54. Affected versionversion=SA8155
  55. Affected versionversion=SA8155P
  56. Affected versionversion=SA8195P
  57. Affected versionversion=SA8255P
  58. Affected versionversion=SA8295P
  59. Affected versionversion=SD835
  60. Affected versionversion=SD865 5G
  61. Affected versionversion=SD888
  62. Affected versionversion=SD 8 Gen1 5G
  63. Affected versionversion=SDM429W
  64. Affected versionversion=SDX55
  65. Affected versionversion=SM4450
  66. Affected versionversion=SM7315
  67. Affected versionversion=SM7325P
  68. Affected versionversion=Smart Audio 400 Platform
  69. Affected versionversion=Snapdragon 429 Mobile Platform
  70. Affected versionversion=Snapdragon 460 Mobile Platform
  71. Affected versionversion=Snapdragon 480 5G Mobile Platform
  72. Affected versionversion=Snapdragon 480+ 5G Mobile Platform (SM4350-AC)
  73. Affected versionversion=Snapdragon 4 Gen 1 Mobile Platform
  74. Affected versionversion=Snapdragon 680 4G Mobile Platform
  75. Affected versionversion=Snapdragon 685 4G Mobile Platform (SM6225-AD)
  76. Affected versionversion=Snapdragon 695 5G Mobile Platform
  77. Affected versionversion=Snapdragon 778G 5G Mobile Platform
  78. Affected versionversion=Snapdragon 778G+ 5G Mobile Platform (SM7325-AE)
  79. Affected versionversion=Snapdragon 780G 5G Mobile Platform
  80. Affected versionversion=Snapdragon 782G Mobile Platform (SM7325-AF)
  81. Affected versionversion=Snapdragon 7c+ Gen 3 Compute
  82. Affected versionversion=Snapdragon 835 Mobile PC Platform
  83. Affected versionversion=Snapdragon 865 5G Mobile Platform
  84. Affected versionversion=Snapdragon 865+ 5G Mobile Platform (SM8250-AB)
  85. Affected versionversion=Snapdragon 870 5G Mobile Platform (SM8250-AC)
  86. Affected versionversion=Snapdragon 888 5G Mobile Platform
  87. Affected versionversion=Snapdragon 888+ 5G Mobile Platform (SM8350-AC)
  88. Affected versionversion=Snapdragon 8 Gen 1 Mobile Platform
  89. Affected versionversion=Snapdragon 8+ Gen 1 Mobile Platform
  90. Affected versionversion=Snapdragon AR2 Gen 1 Platform
  91. Affected versionversion=Snapdragon Auto 4G Modem
  92. Affected versionversion=Snapdragon Auto 5G Modem-RF
  93. Affected versionversion=Snapdragon W5+ Gen 1 Wearable Platform
  94. Affected versionversion=Snapdragon X55 5G Modem-RF System
  95. Affected versionversion=Snapdragon X65 5G Modem-RF System
  96. Affected versionversion=Snapdragon XR2 5G Platform
  97. Affected versionversion=Snapdragon XR2+ Gen 1 Platform
  98. Affected versionversion=SSG2115P
  99. Affected versionversion=SSG2125P
  100. Affected versionversion=SW5100
  101. Affected versionversion=SW5100P
  102. Affected versionversion=SXR1230P
  103. Affected versionversion=SXR2130
  104. Affected versionversion=SXR2230P
  105. Affected versionversion=WCD9326
  106. Affected versionversion=WCD9335
  107. Affected versionversion=WCD9340
  108. Affected versionversion=WCD9341
  109. Affected versionversion=WCD9360
  110. Affected versionversion=WCD9370
  111. Affected versionversion=WCD9375
  112. Affected versionversion=WCD9380
  113. Affected versionversion=WCD9385
  114. Affected versionversion=WCN3620
  115. Affected versionversion=WCN3660B
  116. Affected versionversion=WCN3950
  117. Affected versionversion=WCN3980
  118. Affected versionversion=WCN3988
  119. Affected versionversion=WCN3990
  120. Affected versionversion=WCN6740
  121. Affected versionversion=WSA8810
  122. Affected versionversion=WSA8815
  123. Affected versionversion=WSA8830
  124. Affected versionversion=WSA8832
  125. Affected versionversion=WSA8835

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Qualcomm · Snapdragonversion=AR8035; version=CSRA6620; version=CSRA6640; version=CSRB31024; version=FastConnect 6200; version=FastConnect 6700; version=FastConnect 6800; version=FastConnect 6900; version=FastConnect 7800; version=QAM8255P; version=QAM8295P; version=QAM8650P; version=QAM8775P; version=QCA6175A; version=QCA6310; version=QCA6320; version=QCA6391; version=QCA6426; version=QCA6436; version=QCA6554A; version=QCA6564AU; version=QCA6574; version=QCA6574A; version=QCA6574AU; version=QCA6584AU; version=QCA6595; version=QCA6595AU; version=QCA6678AQ; version=QCA6696; version=QCA6698AQ; version=QCA6797AQ; version=QCA8081; version=QCA8337; version=QCC2073; version=QCC2076; version=QCM4325; version=QCM4490; version=QCM6490; version=QCN6024; version=QCN9024; version=QCS410; version=QCS4490; version=QCS610; version=QCS6490; version=QCS8550; version=SA4150P; version=SA4155P; version=SA6145P; version=SA6150P; version=SA6155; version=SA6155P; version=SA8145P; version=SA8150P; version=SA8155; version=SA8155P; version=SA8195P; version=SA8255P; version=SA8295P; version=SD835; version=SD865 5G; version=SD888; version=SD 8 Gen1 5G; version=SDM429W; version=SDX55; version=SM4450; version=SM7315; version=SM7325P; version=Smart Audio 400 Platform; version=Snapdragon 429 Mobile Platform; version=Snapdragon 460 Mobile Platform; version=Snapdragon 480 5G Mobile Platform; version=Snapdragon 480+ 5G Mobile Platform (SM4350-AC); version=Snapdragon 4 Gen 1 Mobile Platform; version=Snapdragon 680 4G Mobile Platform; version=Snapdragon 685 4G Mobile Platform (SM6225-AD); version=Snapdragon 695 5G Mobile Platform; 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 835 Mobile PC Platform; version=Snapdragon 865 5G Mobile Platform; version=Snapdragon 865+ 5G Mobile Platform (SM8250-AB); version=Snapdragon 870 5G Mobile Platform (SM8250-AC); version=Snapdragon 888 5G Mobile Platform; version=Snapdragon 888+ 5G Mobile Platform (SM8350-AC); version=Snapdragon 8 Gen 1 Mobile Platform; version=Snapdragon 8+ Gen 1 Mobile Platform; version=Snapdragon AR2 Gen 1 Platform; version=Snapdragon Auto 4G Modem; version=Snapdragon Auto 5G Modem-RF; version=Snapdragon W5+ Gen 1 Wearable Platform; version=Snapdragon X55 5G Modem-RF System; version=Snapdragon X65 5G Modem-RF System; version=Snapdragon XR2 5G Platform; version=Snapdragon XR2+ Gen 1 Platform; version=SSG2115P; version=SSG2125P; version=SW5100; version=SW5100P; version=SXR1230P; version=SXR2130; version=SXR2230P; version=WCD9326; version=WCD9335; version=WCD9340; version=WCD9341; version=WCD9360; version=WCD9370; version=WCD9375; version=WCD9380; version=WCD9385; version=WCN3620; version=WCN3660B; version=WCN3950; version=WCN3980; version=WCN3988; version=WCN3990; version=WCN6740; version=WSA8810; version=WSA8815; version=WSA8830; version=WSA8832; version=WSA8835

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-20Improper Input Validation

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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