CVE-2026-21367Network attack vector

Transient service interruption via FILS frame over-read

Published Apr 6, 2026 · Updated Apr 6, 2026

Buffer over-read in Qualcomm Snapdragon WLAN firmware allows attackers to interrupt service while processing an initial wireless scan. The firmware processes a nonstandard FILS Discovery frame with an out-of-range action size and reads beyond the intended buffer. The crafted frame must reach WLAN firmware during an initial scan; the documented consequence is a transient service interruption, not persistent device failure.

CVSS severity7.6
High
EPSS probability0.20%
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 firmware allows attackers to interrupt service while processing an initial wireless scan. The firmware processes a nonstandard FILS Discovery frame with an out-of-range action size and reads beyond the intended buffer. The crafted frame must reach WLAN firmware during an initial scan; the documented consequence is a transient service interruption, not persistent device failure.

The record

CVE
CVE-2026-21367
Published
Apr 6, 2026
Updated
Apr 6, 2026
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-126, T1499.004
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Apr 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 6, 2026Record 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=Cologne
  3. Affected versionversion=CSR8811
  4. Affected versionversion=FastConnect 6200
  5. Affected versionversion=FastConnect 6700
  6. Affected versionversion=FastConnect 6900
  7. Affected versionversion=FastConnect 7800
  8. Affected versionversion=FWA Gen 3 Ultra Platform
  9. Affected versionversion=G2 Gen 1
  10. Affected versionversion=Immersive Home 214 Platform
  11. Affected versionversion=Immersive Home 216 Platform
  12. Affected versionversion=Immersive Home 316 Platform
  13. Affected versionversion=Immersive Home 318 Platform
  14. Affected versionversion=IPQ5010
  15. Affected versionversion=IPQ5028
  16. Affected versionversion=IPQ6000
  17. Affected versionversion=IPQ6010
  18. Affected versionversion=IPQ6018
  19. Affected versionversion=IPQ8076
  20. Affected versionversion=IPQ8078
  21. Affected versionversion=IPQ9574
  22. Affected versionversion=Milos
  23. Affected versionversion=Netrani
  24. Affected versionversion=Networking Pro 1200 Platform
  25. Affected versionversion=Networking Pro 1210 Platform
  26. Affected versionversion=Networking Pro 1610 Platform
  27. Affected versionversion=Networking Pro 400 Platform
  28. Affected versionversion=Networking Pro 600 Platform
  29. Affected versionversion=Networking Pro 610 Platform
  30. Affected versionversion=Networking Pro 800 Platform
  31. Affected versionversion=Networking Pro 810 Platform
  32. Affected versionversion=Orne
  33. Affected versionversion=Palawan25
  34. Affected versionversion=Pandeiro
  35. Affected versionversion=QCA4024
  36. Affected versionversion=QCA6391
  37. Affected versionversion=QCA6698AU
  38. Affected versionversion=QCA6777AQ
  39. Affected versionversion=QCA6787AQ
  40. Affected versionversion=QCA6797AQ
  41. Affected versionversion=QCA8075
  42. Affected versionversion=QCA8081
  43. Affected versionversion=QCA8082
  44. Affected versionversion=QCA8084
  45. Affected versionversion=QCA8085
  46. Affected versionversion=QCA8337
  47. Affected versionversion=QCA8386
  48. Affected versionversion=QCA9888
  49. Affected versionversion=QCA9889
  50. Affected versionversion=QCC2073
  51. Affected versionversion=QCC2076
  52. Affected versionversion=QCC710
  53. Affected versionversion=QCM4490
  54. Affected versionversion=QCN5022
  55. Affected versionversion=QCN5024
  56. Affected versionversion=QCN5052
  57. Affected versionversion=QCN5122
  58. Affected versionversion=QCN5124
  59. Affected versionversion=QCN5152
  60. Affected versionversion=QCN5154
  61. Affected versionversion=QCN5164
  62. Affected versionversion=QCN6023
  63. Affected versionversion=QCN6024
  64. Affected versionversion=QCN6122
  65. Affected versionversion=QCN6132
  66. Affected versionversion=QCN6224
  67. Affected versionversion=QCN6274
  68. Affected versionversion=QCN9000
  69. Affected versionversion=QCN9011
  70. Affected versionversion=QCN9012
  71. Affected versionversion=QCN9022
  72. Affected versionversion=QCN9024
  73. Affected versionversion=QCN9070
  74. Affected versionversion=QCN9100
  75. Affected versionversion=QCN9274
  76. Affected versionversion=QCS4490
  77. Affected versionversion=QCS8550
  78. Affected versionversion=QFW7114
  79. Affected versionversion=QFW7124
  80. Affected versionversion=QLN1083BD
  81. Affected versionversion=QLN1086BD
  82. Affected versionversion=QMP1000
  83. Affected versionversion=QPA1083BD
  84. Affected versionversion=QPA1086BD
  85. Affected versionversion=QXM1093
  86. Affected versionversion=QXM1094
  87. Affected versionversion=QXM1095
  88. Affected versionversion=QXM1096
  89. Affected versionversion=SAR2130P
  90. Affected versionversion=SC8380XP
  91. Affected versionversion=SD 8 Gen1 5G
  92. Affected versionversion=SM6650P
  93. Affected versionversion=SM7435
  94. Affected versionversion=SM7635P
  95. Affected versionversion=SM7675
  96. Affected versionversion=SM7675P
  97. Affected versionversion=SM8475P
  98. Affected versionversion=SM8635
  99. Affected versionversion=SM8635P
  100. Affected versionversion=SM8650Q
  101. Affected versionversion=SM8750P
  102. Affected versionversion=Snapdragon 6 Gen 1 Mobile Platform
  103. Affected versionversion=Snapdragon 6 Gen 3 Mobile Platform
  104. Affected versionversion=Snapdragon 6 Gen 4 Mobile Platform
  105. Affected versionversion=Snapdragon 7 Gen 1 Mobile Platform
  106. Affected versionversion=Snapdragon 7+ Gen 2 Mobile Platform
  107. Affected versionversion=Snapdragon 7s Gen 3 Mobile Platform
  108. Affected versionversion=Snapdragon 8 Elite
  109. Affected versionversion=Snapdragon 8 Elite Gen 5
  110. Affected versionversion=Snapdragon 8 Gen 1 Mobile Platform
  111. Affected versionversion=Snapdragon 8+ Gen 1 Mobile Platform
  112. Affected versionversion=Snapdragon 8 Gen 3 Mobile Platform
  113. Affected versionversion=Snapdragon X72 5G Modem-RF System
  114. Affected versionversion=Snapdragon X75 5G Modem-RF System
  115. Affected versionversion=WCD9340
  116. Affected versionversion=WCD9370
  117. Affected versionversion=WCD9375
  118. Affected versionversion=WCD9378
  119. Affected versionversion=WCD9378C
  120. Affected versionversion=WCD9380
  121. Affected versionversion=WCD9385
  122. Affected versionversion=WCD9390
  123. Affected versionversion=WCD9395
  124. Affected versionversion=WCN3950
  125. Affected versionversion=WCN3988
  126. Affected versionversion=WCN6450
  127. Affected versionversion=WCN6650
  128. Affected versionversion=WCN6755
  129. Affected versionversion=WCN7860
  130. Affected versionversion=WCN7861
  131. Affected versionversion=WCN7880
  132. Affected versionversion=WCN7881
  133. Affected versionversion=WSA8810
  134. Affected versionversion=WSA8815
  135. Affected versionversion=WSA8830
  136. Affected versionversion=WSA8832
  137. Affected versionversion=WSA8835
  138. Affected versionversion=WSA8840
  139. Affected versionversion=WSA8845
  140. Affected versionversion=WSA8845H
  141. Affected versionversion=X2000077
  142. Affected versionversion=X2000086
  143. Affected versionversion=X2000090
  144. Affected versionversion=X2000092
  145. Affected versionversion=X2000094
  146. Affected versionversion=XG101002
  147. Affected versionversion=XG101032
  148. Affected versionversion=XG101039
  149. Affected versionversion=XRV7209
  150. Affected versionversion=XRV9209

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Qualcomm · Snapdragonversion=AR8035; version=Cologne; version=CSR8811; version=FastConnect 6200; version=FastConnect 6700; version=FastConnect 6900; version=FastConnect 7800; version=FWA Gen 3 Ultra Platform; version=G2 Gen 1; version=Immersive Home 214 Platform; version=Immersive Home 216 Platform; version=Immersive Home 316 Platform; version=Immersive Home 318 Platform; version=IPQ5010; version=IPQ5028; version=IPQ6000; version=IPQ6010; version=IPQ6018; version=IPQ8076; version=IPQ8078; version=IPQ9574; version=Milos; version=Netrani; version=Networking Pro 1200 Platform; version=Networking Pro 1210 Platform; version=Networking Pro 1610 Platform; version=Networking Pro 400 Platform; version=Networking Pro 600 Platform; version=Networking Pro 610 Platform; version=Networking Pro 800 Platform; version=Networking Pro 810 Platform; version=Orne; version=Palawan25; version=Pandeiro; version=QCA4024; version=QCA6391; version=QCA6698AU; version=QCA6777AQ; version=QCA6787AQ; version=QCA6797AQ; version=QCA8075; version=QCA8081; version=QCA8082; version=QCA8084; version=QCA8085; version=QCA8337; version=QCA8386; version=QCA9888; version=QCA9889; version=QCC2073; version=QCC2076; version=QCC710; version=QCM4490; version=QCN5022; version=QCN5024; version=QCN5052; version=QCN5122; version=QCN5124; version=QCN5152; version=QCN5154; version=QCN5164; version=QCN6023; version=QCN6024; version=QCN6122; version=QCN6132; version=QCN6224; version=QCN6274; version=QCN9000; version=QCN9011; version=QCN9012; version=QCN9022; version=QCN9024; version=QCN9070; version=QCN9100; version=QCN9274; version=QCS4490; version=QCS8550; version=QFW7114; version=QFW7124; version=QLN1083BD; version=QLN1086BD; version=QMP1000; version=QPA1083BD; version=QPA1086BD; version=QXM1093; version=QXM1094; version=QXM1095; version=QXM1096; version=SAR2130P; version=SC8380XP; version=SD 8 Gen1 5G; version=SM6650P; version=SM7435; version=SM7635P; version=SM7675; version=SM7675P; version=SM8475P; version=SM8635; version=SM8635P; version=SM8650Q; version=SM8750P; version=Snapdragon 6 Gen 1 Mobile Platform; version=Snapdragon 6 Gen 3 Mobile Platform; version=Snapdragon 6 Gen 4 Mobile Platform; version=Snapdragon 7 Gen 1 Mobile Platform; version=Snapdragon 7+ Gen 2 Mobile Platform; version=Snapdragon 7s Gen 3 Mobile Platform; version=Snapdragon 8 Elite; version=Snapdragon 8 Elite Gen 5; version=Snapdragon 8 Gen 1 Mobile Platform; version=Snapdragon 8+ Gen 1 Mobile Platform; version=Snapdragon 8 Gen 3 Mobile Platform; version=Snapdragon X72 5G Modem-RF System; version=Snapdragon X75 5G Modem-RF System; version=WCD9340; version=WCD9370; version=WCD9375; version=WCD9378; version=WCD9378C; version=WCD9380; version=WCD9385; version=WCD9390; version=WCD9395; version=WCN3950; version=WCN3988; version=WCN6450; version=WCN6650; version=WCN6755; version=WCN7860; version=WCN7861; version=WCN7880; version=WCN7881; version=WSA8810; version=WSA8815; version=WSA8830; version=WSA8832; version=WSA8835; version=WSA8840; version=WSA8845; version=WSA8845H; version=X2000077; version=X2000086; version=X2000090; version=X2000092; version=X2000094; version=XG101002; version=XG101032; version=XG101039; version=XRV7209; version=XRV9209

Published CVSS scores

7.6Qualcomm, Inc.CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H
7.5NIST NVDCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-126Buffer Over-read
T1499.004Application or System Exploitation

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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