CVE-2022-33305Network attack vector

Transient modem service interruption via invalid DCCH messages

Published May 2, 2023 · Updated Aug 3, 2024

NULL pointer dereference in the Qualcomm Snapdragon modem allows remote attackers to cause a transient service interruption via invalid DCCH messages. The modem dereferences a NULL pointer while sending an invalid message in the DCCH path; Qualcomm has not disclosed the affected routine or input-validation failure. Network access is sufficient and requires neither authentication nor user interaction; the reported consequence is a transient modem service interruption.

CVSS severity7.5
High
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

NULL pointer dereference in the Qualcomm Snapdragon modem allows remote attackers to cause a transient service interruption via invalid DCCH messages. The modem dereferences a NULL pointer while sending an invalid message in the DCCH path; Qualcomm has not disclosed the affected routine or input-validation failure. Network access is sufficient and requires neither authentication nor user interaction; the reported consequence is a transient modem service interruption.

The record

CVE
CVE-2022-33305
Published
May 2, 2023
Updated
Aug 3, 2024
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 2, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=315 5G IoT Modem
  2. Affected versionversion=AR8035
  3. Affected versionversion=CSRA6620
  4. Affected versionversion=CSRA6640
  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=QCA6391
  11. Affected versionversion=QCA6574A
  12. Affected versionversion=QCA6595AU
  13. Affected versionversion=QCA6696
  14. Affected versionversion=QCA8081
  15. Affected versionversion=QCA8337
  16. Affected versionversion=QCM2290
  17. Affected versionversion=QCM4290
  18. Affected versionversion=QCM4325
  19. Affected versionversion=QCM6490
  20. Affected versionversion=QCN6024
  21. Affected versionversion=QCN9024
  22. Affected versionversion=QCS2290
  23. Affected versionversion=QCS4290
  24. Affected versionversion=QCS6490
  25. Affected versionversion=SD888
  26. Affected versionversion=SDX55
  27. Affected versionversion=SDX57M
  28. Affected versionversion=SG4150P
  29. Affected versionversion=SM7250P
  30. Affected versionversion=SM7315
  31. Affected versionversion=SM7325P
  32. Affected versionversion=Smart Audio 400 Platform
  33. Affected versionversion=Snapdragon 460 Mobile Platform
  34. Affected versionversion=Snapdragon 480 5G Mobile Platform
  35. Affected versionversion=Snapdragon 480+ 5G Mobile Platform (SM4350-AC)
  36. Affected versionversion=Snapdragon 4 Gen 1 Mobile Platform
  37. Affected versionversion=Snapdragon 662 Mobile Platform
  38. Affected versionversion=Snapdragon 680 4G Mobile Platform
  39. Affected versionversion=Snapdragon 685 4G Mobile Platform (SM6225-AD)
  40. Affected versionversion=Snapdragon 690 5G Mobile Platform
  41. Affected versionversion=Snapdragon 695 5G Mobile Platform
  42. Affected versionversion=Snapdragon 765 5G Mobile Platform (SM7250-AA)
  43. Affected versionversion=Snapdragon 765G 5G Mobile Platform (SM7250-AB)
  44. Affected versionversion=Snapdragon 768G 5G Mobile Platform (SM7250-AC)
  45. Affected versionversion=Snapdragon 778G 5G Mobile Platform
  46. Affected versionversion=Snapdragon 778G+ 5G Mobile Platform (SM7325-AE)
  47. Affected versionversion=Snapdragon 780G 5G Mobile Platform
  48. Affected versionversion=Snapdragon 782G Mobile Platform (SM7325-AF)
  49. Affected versionversion=Snapdragon 7c+ Gen 3 Compute
  50. Affected versionversion=Snapdragon 865 5G Mobile Platform
  51. Affected versionversion=Snapdragon 865+ 5G Mobile Platform (SM8250-AB)
  52. Affected versionversion=Snapdragon 870 5G Mobile Platform (SM8250-AC)
  53. Affected versionversion=Snapdragon 888 5G Mobile Platform
  54. Affected versionversion=Snapdragon 888+ 5G Mobile Platform (SM8350-AC)
  55. Affected versionversion=Snapdragon 8 Gen 1 Mobile Platform
  56. Affected versionversion=Snapdragon 8+ Gen 1 Mobile Platform
  57. Affected versionversion=Snapdragon Auto 5G Modem-RF
  58. Affected versionversion=Snapdragon W5+ Gen 1 Wearable Platform
  59. Affected versionversion=Snapdragon X55 5G Modem-RF System
  60. Affected versionversion=Snapdragon X65 5G Modem-RF System
  61. Affected versionversion=Snapdragon X70 Modem-RF System
  62. Affected versionversion=SW5100
  63. Affected versionversion=SW5100P
  64. Affected versionversion=WCD9335
  65. Affected versionversion=WCD9341
  66. Affected versionversion=WCD9360
  67. Affected versionversion=WCD9370
  68. Affected versionversion=WCD9375
  69. Affected versionversion=WCD9380
  70. Affected versionversion=WCD9385
  71. Affected versionversion=WCN3910
  72. Affected versionversion=WCN3950
  73. Affected versionversion=WCN3980
  74. Affected versionversion=WCN3988
  75. Affected versionversion=WCN6740
  76. Affected versionversion=WSA8810
  77. Affected versionversion=WSA8815
  78. Affected versionversion=WSA8830
  79. Affected versionversion=WSA8835

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Qualcomm · Snapdragonversion=315 5G IoT Modem; version=AR8035; version=CSRA6620; version=CSRA6640; version=FastConnect 6200; version=FastConnect 6700; version=FastConnect 6800; version=FastConnect 6900; version=FastConnect 7800; version=QCA6391; version=QCA6574A; version=QCA6595AU; version=QCA6696; version=QCA8081; version=QCA8337; version=QCM2290; version=QCM4290; version=QCM4325; version=QCM6490; version=QCN6024; version=QCN9024; version=QCS2290; version=QCS4290; version=QCS6490; version=SD888; version=SDX55; version=SDX57M; version=SG4150P; version=SM7250P; version=SM7315; version=SM7325P; version=Smart Audio 400 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 662 Mobile Platform; version=Snapdragon 680 4G Mobile Platform; version=Snapdragon 685 4G Mobile Platform (SM6225-AD); version=Snapdragon 690 5G Mobile Platform; version=Snapdragon 695 5G Mobile Platform; version=Snapdragon 765 5G Mobile Platform (SM7250-AA); version=Snapdragon 765G 5G Mobile Platform (SM7250-AB); version=Snapdragon 768G 5G Mobile Platform (SM7250-AC); 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 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 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 X70 Modem-RF System; version=SW5100; version=SW5100P; version=WCD9335; version=WCD9341; version=WCD9360; version=WCD9370; version=WCD9375; version=WCD9380; version=WCD9385; version=WCN3910; version=WCN3950; version=WCN3980; version=WCN3988; version=WCN6740; version=WSA8810; version=WSA8815; version=WSA8830; version=WSA8835

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
7.5NISTCVSS: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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
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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