CVE-2025-21488Network attack vector

Network information disclosure via RTP buffer over-read

Published Sep 24, 2025 · Updated Sep 24, 2025

Buffer over-read in Qualcomm Snapdragon RTP decoding allows remote attackers to read memory through crafted network packets with padding set. The decoder trusts RTP payload or padding length values without ensuring that the packet contains that many bytes, causing processing beyond the available buffer. No privileges or user interaction are required; exposure requires receipt of a malicious RTP packet, with memory disclosure and limited service interruption as the confirmed impacts.

CVSS severity8.2
High
EPSS probability0.27%
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 RTP decoding allows remote attackers to read memory through crafted network packets with padding set. The decoder trusts RTP payload or padding length values without ensuring that the packet contains that many bytes, causing processing beyond the available buffer. No privileges or user interaction are required; exposure requires receipt of a malicious RTP packet, with memory disclosure and limited service interruption as the confirmed impacts.

The record

CVE
CVE-2025-21488
Published
Sep 24, 2025
Updated
Sep 24, 2025
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-126, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 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=FastConnect 6200
  2. Affected versionversion=FastConnect 6700
  3. Affected versionversion=FastConnect 6900
  4. Affected versionversion=FastConnect 7800
  5. Affected versionversion=MSM8996AU
  6. Affected versionversion=QCA6564
  7. Affected versionversion=QCA6564A
  8. Affected versionversion=QCA6564AU
  9. Affected versionversion=QCA6574
  10. Affected versionversion=QCA6574A
  11. Affected versionversion=QCA6574AU
  12. Affected versionversion=QCA6595AU
  13. Affected versionversion=QCA6696
  14. Affected versionversion=QCM4490
  15. Affected versionversion=QCS410
  16. Affected versionversion=QCS4490
  17. Affected versionversion=QCS610
  18. Affected versionversion=QMP1000
  19. Affected versionversion=Qualcomm Video Collaboration VC1 Platform
  20. Affected versionversion=Qualcomm Video Collaboration VC3 Platform
  21. Affected versionversion=SA6145P
  22. Affected versionversion=SA6155
  23. Affected versionversion=SA6155P
  24. Affected versionversion=SA8155
  25. Affected versionversion=SA8155P
  26. Affected versionversion=SD660
  27. Affected versionversion=SD670
  28. Affected versionversion=SD865 5G
  29. Affected versionversion=SD 8 Gen1 5G
  30. Affected versionversion=SDM429W
  31. Affected versionversion=SG4150P
  32. Affected versionversion=SM4125
  33. Affected versionversion=SM4635
  34. Affected versionversion=SM6370
  35. Affected versionversion=SM6650
  36. Affected versionversion=SM7635
  37. Affected versionversion=SM7675
  38. Affected versionversion=SM7675P
  39. Affected versionversion=SM8550P
  40. Affected versionversion=SM8635
  41. Affected versionversion=SM8635P
  42. Affected versionversion=SM8650Q
  43. Affected versionversion=SM8735
  44. Affected versionversion=SM8750
  45. Affected versionversion=SM8750P
  46. Affected versionversion=Snapdragon 429 Mobile Platform
  47. Affected versionversion=Snapdragon 460 Mobile Platform
  48. Affected versionversion=Snapdragon 480 5G Mobile Platform
  49. Affected versionversion=Snapdragon 480+ 5G Mobile Platform (SM4350-AC)
  50. Affected versionversion=Snapdragon 4 Gen 1 Mobile Platform
  51. Affected versionversion=Snapdragon 4 Gen 2 Mobile Platform
  52. Affected versionversion=Snapdragon 660 Mobile Platform
  53. Affected versionversion=Snapdragon 662 Mobile Platform
  54. Affected versionversion=Snapdragon 670 Mobile Platform
  55. Affected versionversion=Snapdragon 680 4G Mobile Platform
  56. Affected versionversion=Snapdragon 685 4G Mobile Platform (SM6225-AD)
  57. Affected versionversion=Snapdragon 695 5G Mobile Platform
  58. Affected versionversion=Snapdragon 710 Mobile Platform
  59. Affected versionversion=Snapdragon 820 Automotive Platform
  60. Affected versionversion=Snapdragon 845 Mobile Platform
  61. Affected versionversion=Snapdragon 8 Gen 1 Mobile Platform
  62. Affected versionversion=Snapdragon 8+ Gen 1 Mobile Platform
  63. Affected versionversion=Snapdragon 8 Gen 2 Mobile Platform
  64. Affected versionversion=Snapdragon 8+ Gen 2 Mobile Platform
  65. Affected versionversion=Snapdragon 8 Gen 3 Mobile Platform
  66. Affected versionversion=Snapdragon W5+ Gen 1 Wearable Platform
  67. Affected versionversion=Snapdragon XR1 Platform
  68. Affected versionversion=Snapdragon XR2 5G Platform
  69. Affected versionversion=Snapdragon XR2+ Gen 1 Platform
  70. Affected versionversion=SW5100
  71. Affected versionversion=SW5100P
  72. Affected versionversion=SXR1120
  73. Affected versionversion=TalynPlus
  74. Affected versionversion=WCD9326
  75. Affected versionversion=WCD9335
  76. Affected versionversion=WCD9340
  77. Affected versionversion=WCD9341
  78. Affected versionversion=WCD9370
  79. Affected versionversion=WCD9375
  80. Affected versionversion=WCD9378
  81. Affected versionversion=WCD9380
  82. Affected versionversion=WCD9385
  83. Affected versionversion=WCD9390
  84. Affected versionversion=WCD9395
  85. Affected versionversion=WCN3620
  86. Affected versionversion=WCN3660B
  87. Affected versionversion=WCN3910
  88. Affected versionversion=WCN3950
  89. Affected versionversion=WCN3980
  90. Affected versionversion=WCN3988
  91. Affected versionversion=WCN3990
  92. Affected versionversion=WCN6450
  93. Affected versionversion=WCN6650
  94. Affected versionversion=WCN6740
  95. Affected versionversion=WCN6755
  96. Affected versionversion=WCN7750
  97. Affected versionversion=WCN7860
  98. Affected versionversion=WCN7861
  99. Affected versionversion=WCN7880
  100. Affected versionversion=WCN7881
  101. Affected versionversion=WSA8810
  102. Affected versionversion=WSA8815
  103. Affected versionversion=WSA8830
  104. Affected versionversion=WSA8832
  105. Affected versionversion=WSA8835
  106. Affected versionversion=WSA8840
  107. Affected versionversion=WSA8845
  108. Affected versionversion=WSA8845H

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Qualcomm · Snapdragonversion=FastConnect 6200; version=FastConnect 6700; version=FastConnect 6900; version=FastConnect 7800; version=MSM8996AU; version=QCA6564; version=QCA6564A; version=QCA6564AU; version=QCA6574; version=QCA6574A; version=QCA6574AU; version=QCA6595AU; version=QCA6696; version=QCM4490; version=QCS410; version=QCS4490; version=QCS610; version=QMP1000; version=Qualcomm Video Collaboration VC1 Platform; version=Qualcomm Video Collaboration VC3 Platform; version=SA6145P; version=SA6155; version=SA6155P; version=SA8155; version=SA8155P; version=SD660; version=SD670; version=SD865 5G; version=SD 8 Gen1 5G; version=SDM429W; version=SG4150P; version=SM4125; version=SM4635; version=SM6370; version=SM6650; version=SM7635; version=SM7675; version=SM7675P; version=SM8550P; version=SM8635; version=SM8635P; version=SM8650Q; version=SM8735; version=SM8750; version=SM8750P; 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 4 Gen 2 Mobile Platform; version=Snapdragon 660 Mobile Platform; version=Snapdragon 662 Mobile Platform; version=Snapdragon 670 Mobile Platform; version=Snapdragon 680 4G Mobile Platform; version=Snapdragon 685 4G Mobile Platform (SM6225-AD); version=Snapdragon 695 5G Mobile Platform; version=Snapdragon 710 Mobile Platform; version=Snapdragon 820 Automotive Platform; version=Snapdragon 845 Mobile Platform; version=Snapdragon 8 Gen 1 Mobile Platform; version=Snapdragon 8+ Gen 1 Mobile Platform; version=Snapdragon 8 Gen 2 Mobile Platform; version=Snapdragon 8+ Gen 2 Mobile Platform; version=Snapdragon 8 Gen 3 Mobile Platform; version=Snapdragon W5+ Gen 1 Wearable Platform; version=Snapdragon XR1 Platform; version=Snapdragon XR2 5G Platform; version=Snapdragon XR2+ Gen 1 Platform; version=SW5100; version=SW5100P; version=SXR1120; version=TalynPlus; version=WCD9326; version=WCD9335; version=WCD9340; version=WCD9341; version=WCD9370; version=WCD9375; version=WCD9378; version=WCD9380; version=WCD9385; version=WCD9390; version=WCD9395; version=WCN3620; version=WCN3660B; version=WCN3910; version=WCN3950; version=WCN3980; version=WCN3988; version=WCN3990; version=WCN6450; version=WCN6650; version=WCN6740; version=WCN6755; version=WCN7750; version=WCN7860; version=WCN7861; version=WCN7880; version=WCN7881; version=WSA8810; version=WSA8815; version=WSA8830; version=WSA8832; version=WSA8835; version=WSA8840; version=WSA8845; version=WSA8845H

Published CVSS scores

8.2Qualcomm, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L

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
T1190Exploit Public-Facing Application

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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