CVE-2023-28538

Memory corruption via WinAcpi UEFI update driver

Published Sep 5, 2023 · Updated Feb 27, 2025

A stack-based buffer overflow in WIN Product on Qualcomm Snapdragon platforms allows local users to corrupt memory through the WinAcpi update driver. The flaw occurs when the WinAcpi update driver is invoked in the UEFI region, but Qualcomm has not disclosed which input overruns the stack buffer. Exploitation requires local access and invocation of the affected update path; the published record does not describe post-corruption behavior.

CVSS severity8.4
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

A stack-based buffer overflow in WIN Product on Qualcomm Snapdragon platforms allows local users to corrupt memory through the WinAcpi update driver. The flaw occurs when the WinAcpi update driver is invoked in the UEFI region, but Qualcomm has not disclosed which input overruns the stack buffer. Exploitation requires local access and invocation of the affected update path; the published record does not describe post-corruption behavior.

The record

CVE
CVE-2023-28538
Published
Sep 5, 2023
Updated
Feb 27, 2025
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-121
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 5, 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=AQT1000
  2. Affected versionversion=CSRA6620
  3. Affected versionversion=CSRA6640
  4. Affected versionversion=FastConnect 6200
  5. Affected versionversion=FastConnect 6800
  6. Affected versionversion=FastConnect 6900
  7. Affected versionversion=FastConnect 7800
  8. Affected versionversion=Flight RB5 5G Platform
  9. Affected versionversion=FSM10056
  10. Affected versionversion=QCA6174A
  11. Affected versionversion=QCA6310
  12. Affected versionversion=QCA6335
  13. Affected versionversion=QCA6391
  14. Affected versionversion=QCA6420
  15. Affected versionversion=QCA6421
  16. Affected versionversion=QCA6426
  17. Affected versionversion=QCA6430
  18. Affected versionversion=QCA6431
  19. Affected versionversion=QCA6436
  20. Affected versionversion=QCA6564
  21. Affected versionversion=QCA6564A
  22. Affected versionversion=QCA6564AU
  23. Affected versionversion=QCA6574
  24. Affected versionversion=QCA6574A
  25. Affected versionversion=QCA6574AU
  26. Affected versionversion=QCA6595
  27. Affected versionversion=QCA6595AU
  28. Affected versionversion=QCA6696
  29. Affected versionversion=QCM2290
  30. Affected versionversion=QCM4290
  31. Affected versionversion=QCM4325
  32. Affected versionversion=QCM6125
  33. Affected versionversion=QCN7606
  34. Affected versionversion=QCN9011
  35. Affected versionversion=QCN9012
  36. Affected versionversion=QCS2290
  37. Affected versionversion=QCS410
  38. Affected versionversion=QCS4290
  39. Affected versionversion=QCS610
  40. Affected versionversion=QCS6125
  41. Affected versionversion=QCS8155
  42. Affected versionversion=QRB5165M
  43. Affected versionversion=QRB5165N
  44. Affected versionversion=QSM8250
  45. Affected versionversion=Qualcomm Robotics RB3 Platform
  46. Affected versionversion=Qualcomm Robotics RB5 Platform
  47. Affected versionversion=SA4150P
  48. Affected versionversion=SA4155P
  49. Affected versionversion=SA6145P
  50. Affected versionversion=SA6150P
  51. Affected versionversion=SA6155
  52. Affected versionversion=SA6155P
  53. Affected versionversion=SA8145P
  54. Affected versionversion=SA8150P
  55. Affected versionversion=SA8155
  56. Affected versionversion=SA8155P
  57. Affected versionversion=SA8195P
  58. Affected versionversion=SC8180X+SDX55
  59. Affected versionversion=SD460
  60. Affected versionversion=SD480
  61. Affected versionversion=SD662
  62. Affected versionversion=SD665
  63. Affected versionversion=SD670
  64. Affected versionversion=SD675
  65. Affected versionversion=SD 675
  66. Affected versionversion=SD678
  67. Affected versionversion=SD680
  68. Affected versionversion=SD690 5G
  69. Affected versionversion=SD695
  70. Affected versionversion=SD710
  71. Affected versionversion=SD712
  72. Affected versionversion=SD720G
  73. Affected versionversion=SD730
  74. Affected versionversion=SD750G
  75. Affected versionversion=SD765
  76. Affected versionversion=SD765G
  77. Affected versionversion=SD768G
  78. Affected versionversion=SD7c
  79. Affected versionversion=SD845
  80. Affected versionversion=SD855
  81. Affected versionversion=SD865 5G
  82. Affected versionversion=SD870
  83. Affected versionversion=SD 8CX
  84. Affected versionversion=SD 8cx Gen2
  85. Affected versionversion=SD 8 Gen1 5G
  86. Affected versionversion=SDX55
  87. Affected versionversion=SG4150P
  88. Affected versionversion=SM4125
  89. Affected versionversion=SM6250
  90. Affected versionversion=SM6250P
  91. Affected versionversion=SM7250P
  92. Affected versionversion=Smart Audio 200 Platform
  93. Affected versionversion=Snapdragon 4 Gen 1
  94. Affected versionversion=Snapdragon 850 Mobile Compute Platform
  95. Affected versionversion=Snapdragon AR2 Gen 1 Platform
  96. Affected versionversion=Snapdragon W5+ Gen 1 Wearable Platform
  97. Affected versionversion=Snapdragon X50 5G Modem-RF System
  98. Affected versionversion=Snapdragon X55 5G Modem-RF System
  99. Affected versionversion=Snapdragon XR1 Platform
  100. Affected versionversion=Snapdragon XR2 5G Platform
  101. Affected versionversion=Snapdragon XR2+ Gen 1 Platform
  102. Affected versionversion=SSG2115P
  103. Affected versionversion=SSG2125P
  104. Affected versionversion=SW5100
  105. Affected versionversion=SW5100P
  106. Affected versionversion=SXR1120
  107. Affected versionversion=SXR1230P
  108. Affected versionversion=SXR2130
  109. Affected versionversion=SXR2230P
  110. Affected versionversion=Vision Intelligence 300 Platform
  111. Affected versionversion=Vision Intelligence 400 Platform
  112. Affected versionversion=WCD9326
  113. Affected versionversion=WCD9335
  114. Affected versionversion=WCD9340
  115. Affected versionversion=WCD9341
  116. Affected versionversion=WCD9370
  117. Affected versionversion=WCD9371
  118. Affected versionversion=WCD9375
  119. Affected versionversion=WCD9380
  120. Affected versionversion=WCD9385
  121. Affected versionversion=WCN3910
  122. Affected versionversion=WCN3950
  123. Affected versionversion=WCN3980
  124. Affected versionversion=WCN3988
  125. Affected versionversion=WCN3990
  126. Affected versionversion=WSA8810
  127. Affected versionversion=WSA8815
  128. Affected versionversion=WSA8830
  129. Affected versionversion=WSA8832
  130. Affected versionversion=WSA8835

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Qualcomm · Snapdragonversion=AQT1000; version=CSRA6620; version=CSRA6640; version=FastConnect 6200; version=FastConnect 6800; version=FastConnect 6900; version=FastConnect 7800; version=Flight RB5 5G Platform; version=FSM10056; version=QCA6174A; version=QCA6310; version=QCA6335; version=QCA6391; version=QCA6420; version=QCA6421; version=QCA6426; version=QCA6430; version=QCA6431; version=QCA6436; version=QCA6564; version=QCA6564A; version=QCA6564AU; version=QCA6574; version=QCA6574A; version=QCA6574AU; version=QCA6595; version=QCA6595AU; version=QCA6696; version=QCM2290; version=QCM4290; version=QCM4325; version=QCM6125; version=QCN7606; version=QCN9011; version=QCN9012; version=QCS2290; version=QCS410; version=QCS4290; version=QCS610; version=QCS6125; version=QCS8155; version=QRB5165M; version=QRB5165N; version=QSM8250; version=Qualcomm Robotics RB3 Platform; version=Qualcomm Robotics RB5 Platform; version=SA4150P; version=SA4155P; version=SA6145P; version=SA6150P; version=SA6155; version=SA6155P; version=SA8145P; version=SA8150P; version=SA8155; version=SA8155P; version=SA8195P; version=SC8180X+SDX55; version=SD460; version=SD480; version=SD662; version=SD665; version=SD670; version=SD675; version=SD 675; version=SD678; version=SD680; version=SD690 5G; version=SD695; version=SD710; version=SD712; version=SD720G; version=SD730; version=SD750G; version=SD765; version=SD765G; version=SD768G; version=SD7c; version=SD845; version=SD855; version=SD865 5G; version=SD870; version=SD 8CX; version=SD 8cx Gen2; version=SD 8 Gen1 5G; version=SDX55; version=SG4150P; version=SM4125; version=SM6250; version=SM6250P; version=SM7250P; version=Smart Audio 200 Platform; version=Snapdragon 4 Gen 1; version=Snapdragon 850 Mobile Compute Platform; version=Snapdragon AR2 Gen 1 Platform; version=Snapdragon W5+ Gen 1 Wearable Platform; version=Snapdragon X50 5G Modem-RF System; version=Snapdragon X55 5G Modem-RF System; version=Snapdragon XR1 Platform; version=Snapdragon XR2 5G Platform; version=Snapdragon XR2+ Gen 1 Platform; version=SSG2115P; version=SSG2125P; version=SW5100; version=SW5100P; version=SXR1120; version=SXR1230P; version=SXR2130; version=SXR2230P; version=Vision Intelligence 300 Platform; version=Vision Intelligence 400 Platform; version=WCD9326; version=WCD9335; version=WCD9340; version=WCD9341; version=WCD9370; version=WCD9371; version=WCD9375; version=WCD9380; version=WCD9385; version=WCN3910; version=WCN3950; version=WCN3980; version=WCN3988; version=WCN3990; version=WSA8810; version=WSA8815; version=WSA8830; version=WSA8832; 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
8.4Qualcomm, Inc.CVSS:3.1/AV:L/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow

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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