CVE-2025-21434Network attack vector

Transient service interruption via EHT IE parsing

Published Apr 7, 2025 · Updated Apr 7, 2025

Buffer over-read in Qualcomm Snapdragon WLAN Host allows remote attackers to interrupt service via crafted EHT information elements. The WLAN Host parser reads beyond the supplied buffer while processing an EHT operation IE or EHT capability IE. An unauthenticated network path with no user interaction is sufficient; Qualcomm reports a transient denial of service rather than data disclosure or modification.

CVSS severity7.5
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer over-read in Qualcomm Snapdragon WLAN Host allows remote attackers to interrupt service via crafted EHT information elements. The WLAN Host parser reads beyond the supplied buffer while processing an EHT operation IE or EHT capability IE. An unauthenticated network path with no user interaction is sufficient; Qualcomm reports a transient denial of service rather than data disclosure or modification.

The record

CVE
CVE-2025-21434
Published
Apr 7, 2025
Updated
Apr 7, 2025
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-126, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 7, 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=AR8035
  2. Affected versionversion=FastConnect 6700
  3. Affected versionversion=FastConnect 6900
  4. Affected versionversion=FastConnect 7800
  5. Affected versionversion=QAM8255P
  6. Affected versionversion=QAM8295P
  7. Affected versionversion=QAM8620P
  8. Affected versionversion=QAM8650P
  9. Affected versionversion=QAM8775P
  10. Affected versionversion=QAMSRV1H
  11. Affected versionversion=QAMSRV1M
  12. Affected versionversion=QCA6391
  13. Affected versionversion=QCA6554A
  14. Affected versionversion=QCA6564AU
  15. Affected versionversion=QCA6574
  16. Affected versionversion=QCA6574A
  17. Affected versionversion=QCA6574AU
  18. Affected versionversion=QCA6584AU
  19. Affected versionversion=QCA6595
  20. Affected versionversion=QCA6595AU
  21. Affected versionversion=QCA6678AQ
  22. Affected versionversion=QCA6688AQ
  23. Affected versionversion=QCA6696
  24. Affected versionversion=QCA6698AQ
  25. Affected versionversion=QCA6777AQ
  26. Affected versionversion=QCA6787AQ
  27. Affected versionversion=QCA6797AQ
  28. Affected versionversion=QCA8081
  29. Affected versionversion=QCA8337
  30. Affected versionversion=QCC2073
  31. Affected versionversion=QCC2076
  32. Affected versionversion=QCC710
  33. Affected versionversion=QCM5430
  34. Affected versionversion=QCM6490
  35. Affected versionversion=QCM8550
  36. Affected versionversion=QCN6224
  37. Affected versionversion=QCN6274
  38. Affected versionversion=QCN9011
  39. Affected versionversion=QCN9012
  40. Affected versionversion=QCN9274
  41. Affected versionversion=QCS5430
  42. Affected versionversion=QCS615
  43. Affected versionversion=QCS6490
  44. Affected versionversion=QCS7230
  45. Affected versionversion=QCS8250
  46. Affected versionversion=QCS8300
  47. Affected versionversion=QCS8550
  48. Affected versionversion=QCS9100
  49. Affected versionversion=QFW7114
  50. Affected versionversion=QFW7124
  51. Affected versionversion=QMP1000
  52. Affected versionversion=Qualcomm Video Collaboration VC3 Platform
  53. Affected versionversion=Qualcomm Video Collaboration VC5 Platform
  54. Affected versionversion=SA6155P
  55. Affected versionversion=SA7255P
  56. Affected versionversion=SA7775P
  57. Affected versionversion=SA8155P
  58. Affected versionversion=SA8195P
  59. Affected versionversion=SA8255P
  60. Affected versionversion=SA8295P
  61. Affected versionversion=SA8530P
  62. Affected versionversion=SA8540P
  63. Affected versionversion=SA8620P
  64. Affected versionversion=SA8650P
  65. Affected versionversion=SA8770P
  66. Affected versionversion=SA8775P
  67. Affected versionversion=SA9000P
  68. Affected versionversion=SG8275P
  69. Affected versionversion=SM6650
  70. Affected versionversion=SM7635
  71. Affected versionversion=SM7675
  72. Affected versionversion=SM7675P
  73. Affected versionversion=SM8550P
  74. Affected versionversion=SM8635
  75. Affected versionversion=SM8635P
  76. Affected versionversion=SM8650Q
  77. Affected versionversion=SM8735
  78. Affected versionversion=SM8750
  79. Affected versionversion=SM8750P
  80. Affected versionversion=Snapdragon 8 Gen 2 Mobile Platform
  81. Affected versionversion=Snapdragon 8+ Gen 2 Mobile Platform
  82. Affected versionversion=Snapdragon 8 Gen 3 Mobile Platform
  83. Affected versionversion=Snapdragon AR1 Gen 1 Platform
  84. Affected versionversion=Snapdragon AR1 Gen 1 Platform "Luna1"
  85. Affected versionversion=Snapdragon AR2 Gen 1 Platform
  86. Affected versionversion=Snapdragon Auto 5G Modem-RF Gen 2
  87. Affected versionversion=Snapdragon X72 5G Modem-RF System
  88. Affected versionversion=Snapdragon X75 5G Modem-RF System
  89. Affected versionversion=SRV1H
  90. Affected versionversion=SRV1L
  91. Affected versionversion=SRV1M
  92. Affected versionversion=SSG2115P
  93. Affected versionversion=SSG2125P
  94. Affected versionversion=SXR1230P
  95. Affected versionversion=SXR2230P
  96. Affected versionversion=SXR2250P
  97. Affected versionversion=SXR2330P
  98. Affected versionversion=Vision Intelligence 400 Platform
  99. Affected versionversion=WCD9335
  100. Affected versionversion=WCD9340
  101. Affected versionversion=WCD9341
  102. Affected versionversion=WCD9370
  103. Affected versionversion=WCD9375
  104. Affected versionversion=WCD9378
  105. Affected versionversion=WCD9380
  106. Affected versionversion=WCD9385
  107. Affected versionversion=WCD9390
  108. Affected versionversion=WCD9395
  109. Affected versionversion=WCN3990
  110. Affected versionversion=WCN6650
  111. Affected versionversion=WCN6755
  112. Affected versionversion=WCN7750
  113. Affected versionversion=WCN7860
  114. Affected versionversion=WCN7861
  115. Affected versionversion=WCN7880
  116. Affected versionversion=WCN7881
  117. Affected versionversion=WSA8830
  118. Affected versionversion=WSA8832
  119. Affected versionversion=WSA8835
  120. Affected versionversion=WSA8840
  121. Affected versionversion=WSA8845
  122. Affected versionversion=WSA8845H

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Qualcomm · Snapdragonversion=AR8035; version=FastConnect 6700; version=FastConnect 6900; version=FastConnect 7800; version=QAM8255P; version=QAM8295P; version=QAM8620P; version=QAM8650P; version=QAM8775P; version=QAMSRV1H; version=QAMSRV1M; version=QCA6391; version=QCA6554A; version=QCA6564AU; version=QCA6574; version=QCA6574A; version=QCA6574AU; version=QCA6584AU; version=QCA6595; version=QCA6595AU; version=QCA6678AQ; version=QCA6688AQ; version=QCA6696; version=QCA6698AQ; version=QCA6777AQ; version=QCA6787AQ; version=QCA6797AQ; version=QCA8081; version=QCA8337; version=QCC2073; version=QCC2076; version=QCC710; version=QCM5430; version=QCM6490; version=QCM8550; version=QCN6224; version=QCN6274; version=QCN9011; version=QCN9012; version=QCN9274; version=QCS5430; version=QCS615; version=QCS6490; version=QCS7230; version=QCS8250; version=QCS8300; version=QCS8550; version=QCS9100; version=QFW7114; version=QFW7124; version=QMP1000; version=Qualcomm Video Collaboration VC3 Platform; version=Qualcomm Video Collaboration VC5 Platform; version=SA6155P; version=SA7255P; version=SA7775P; version=SA8155P; version=SA8195P; version=SA8255P; version=SA8295P; version=SA8530P; version=SA8540P; version=SA8620P; version=SA8650P; version=SA8770P; version=SA8775P; version=SA9000P; version=SG8275P; version=SM6650; version=SM7635; version=SM7675; version=SM7675P; version=SM8550P; version=SM8635; version=SM8635P; version=SM8650Q; version=SM8735; version=SM8750; version=SM8750P; version=Snapdragon 8 Gen 2 Mobile Platform; version=Snapdragon 8+ Gen 2 Mobile Platform; version=Snapdragon 8 Gen 3 Mobile Platform; version=Snapdragon AR1 Gen 1 Platform; version=Snapdragon AR1 Gen 1 Platform "Luna1"; version=Snapdragon AR2 Gen 1 Platform; version=Snapdragon Auto 5G Modem-RF Gen 2; version=Snapdragon X72 5G Modem-RF System; version=Snapdragon X75 5G Modem-RF System; version=SRV1H; version=SRV1L; version=SRV1M; version=SSG2115P; version=SSG2125P; version=SXR1230P; version=SXR2230P; version=SXR2250P; version=SXR2330P; version=Vision Intelligence 400 Platform; version=WCD9335; version=WCD9340; version=WCD9341; version=WCD9370; version=WCD9375; version=WCD9378; version=WCD9380; version=WCD9385; version=WCD9390; version=WCD9395; version=WCN3990; version=WCN6650; version=WCN6755; version=WCN7750; version=WCN7860; version=WCN7861; version=WCN7880; version=WCN7881; version=WSA8830; version=WSA8832; version=WSA8835; version=WSA8840; version=WSA8845; version=WSA8845H

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-126Buffer Over-read
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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