CVE-2026-20319

Service crash via undisclosed buffer flaw

Published Aug 19, 2026 · Updated Aug 19, 2026

Buffer-management flaws in Cisco Secure Workload before 3.10.9.1 and 4.0.4.16 allow attackers to crash services via unspecified vectors. Cisco grouped multiple internally found issues under one CVE and disclosed only that the weakness class is CWE-119, covering buffer overflows and out-of-bounds writes; no affected component, code path, or untrusted input source has been published. The advisory applies to SaaS and on-premises deployments regardless of configuration, and the public record supports availability impact only, with no known active exploitation.

CVSS severityUnavailable
Unscored
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer-management flaws in Cisco Secure Workload before 3.10.9.1 and 4.0.4.16 allow attackers to crash services via unspecified vectors. Cisco grouped multiple internally found issues under one CVE and disclosed only that the weakness class is CWE-119, covering buffer overflows and out-of-bounds writes; no affected component, code path, or untrusted input source has been published. The advisory applies to SaaS and on-premises deployments regardless of configuration, and the public record supports availability impact only, with no known active exploitation.

The record

CVE
CVE-2026-20319
Published
Aug 19, 2026
Updated
Aug 19, 2026
Vendor
ClamAV
Product
Cisco Secure Workload
Classifications
CWE-119
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 19, 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=1.102.21
  2. Affected versionversion=1.103.1.12
  3. Affected versionversion=2.0.1.34
  4. Affected versionversion=2.0.2.20
  5. Affected versionversion=2.1.1.29
  6. Affected versionversion=2.1.1.31
  7. Affected versionversion=2.1.1.33
  8. Affected versionversion=2.2.1.34
  9. Affected versionversion=2.2.1.35
  10. Affected versionversion=2.2.1.39
  11. Affected versionversion=2.2.1.41
  12. Affected versionversion=2.3.1.41
  13. Affected versionversion=2.3.1.45
  14. Affected versionversion=2.3.1.49
  15. Affected versionversion=2.3.1.50
  16. Affected versionversion=2.3.1.51
  17. Affected versionversion=2.3.1.52
  18. Affected versionversion=2.3.1.53
  19. Affected versionversion=3.10.1.1
  20. Affected versionversion=3.10.2.11
  21. Affected versionversion=3.10.3.19
  22. Affected versionversion=3.10.4.8
  23. Affected versionversion=3.10.5.6
  24. Affected versionversion=3.10.6.3
  25. Affected versionversion=3.10.7.4
  26. Affected versionversion=3.10.8.3
  27. Affected versionversion=3.1.1.53
  28. Affected versionversion=3.1.1.54
  29. Affected versionversion=3.1.1.55
  30. Affected versionversion=3.1.1.59
  31. Affected versionversion=3.1.1.61
  32. Affected versionversion=3.1.1.65
  33. Affected versionversion=3.1.1.67
  34. Affected versionversion=3.1.1.70
  35. Affected versionversion=3.2.1.18
  36. Affected versionversion=3.2.1.19
  37. Affected versionversion=3.2.1.20
  38. Affected versionversion=3.2.1.28
  39. Affected versionversion=3.2.1.31
  40. Affected versionversion=3.2.1.32
  41. Affected versionversion=3.2.1.33
  42. Affected versionversion=3.3.2.12
  43. Affected versionversion=3.3.2.16
  44. Affected versionversion=3.3.2.2
  45. Affected versionversion=3.3.2.23
  46. Affected versionversion=3.3.2.28
  47. Affected versionversion=3.3.2.33
  48. Affected versionversion=3.3.2.35
  49. Affected versionversion=3.3.2.42
  50. Affected versionversion=3.3.2.5
  51. Affected versionversion=3.3.2.50
  52. Affected versionversion=3.3.2.53
  53. Affected versionversion=3.4.1.1
  54. Affected versionversion=3.4.1.14
  55. Affected versionversion=3.4.1.19
  56. Affected versionversion=3.4.1.20
  57. Affected versionversion=3.4.1.28
  58. Affected versionversion=3.4.1.34
  59. Affected versionversion=3.4.1.35
  60. Affected versionversion=3.4.1.40
  61. Affected versionversion=3.4.1.6
  62. Affected versionversion=3.5.1.1
  63. Affected versionversion=3.5.1.17
  64. Affected versionversion=3.5.1.2
  65. Affected versionversion=3.5.1.20
  66. Affected versionversion=3.5.1.23
  67. Affected versionversion=3.5.1.30
  68. Affected versionversion=3.5.1.31
  69. Affected versionversion=3.5.1.37
  70. Affected versionversion=3.6.1.17
  71. Affected versionversion=3.6.1.21
  72. Affected versionversion=3.6.1.35
  73. Affected versionversion=3.6.1.36
  74. Affected versionversion=3.6.1.47
  75. Affected versionversion=3.6.1.5
  76. Affected versionversion=3.6.1.52
  77. Affected versionversion=3.7.1.22
  78. Affected versionversion=3.7.1.39
  79. Affected versionversion=3.7.1.5
  80. Affected versionversion=3.7.1.51
  81. Affected versionversion=3.7.1.59
  82. Affected versionversion=3.8.1.1
  83. Affected versionversion=3.8.1.19
  84. Affected versionversion=3.8.1.36
  85. Affected versionversion=3.8.1.39
  86. Affected versionversion=3.8.1.53
  87. Affected versionversion=3.9.1.1
  88. Affected versionversion=3.9.1.10
  89. Affected versionversion=3.9.1.24
  90. Affected versionversion=3.9.1.25
  91. Affected versionversion=3.9.1.28
  92. Affected versionversion=3.9.1.38
  93. Affected versionversion=3.9.1.52
  94. Affected versionversion=3.9.1.64
  95. Affected versionversion=3.9.1.66
  96. Affected versionversion=3.9.1.69
  97. Affected versionversion=4.0.1.1
  98. Affected versionversion=4.0.2.4
  99. Affected versionversion=4.0.2.5
  100. Affected versionversion=4.0.3.13
  101. Affected versionversion=4.0.3.17

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

ClamAV · Cisco Secure Workloadversion=1.102.21; version=1.103.1.12; version=2.0.1.34; version=2.0.2.20; version=2.1.1.29; version=2.1.1.31; version=2.1.1.33; version=2.2.1.34; version=2.2.1.35; version=2.2.1.39; version=2.2.1.41; version=2.3.1.41; version=2.3.1.45; version=2.3.1.49; version=2.3.1.50; version=2.3.1.51; version=2.3.1.52; version=2.3.1.53; version=3.10.1.1; version=3.10.2.11; version=3.10.3.19; version=3.10.4.8; version=3.10.5.6; version=3.10.6.3; version=3.10.7.4; version=3.10.8.3; version=3.1.1.53; version=3.1.1.54; version=3.1.1.55; version=3.1.1.59; version=3.1.1.61; version=3.1.1.65; version=3.1.1.67; version=3.1.1.70; version=3.2.1.18; version=3.2.1.19; version=3.2.1.20; version=3.2.1.28; version=3.2.1.31; version=3.2.1.32; version=3.2.1.33; version=3.3.2.12; version=3.3.2.16; version=3.3.2.2; version=3.3.2.23; version=3.3.2.28; version=3.3.2.33; version=3.3.2.35; version=3.3.2.42; version=3.3.2.5; version=3.3.2.50; version=3.3.2.53; version=3.4.1.1; version=3.4.1.14; version=3.4.1.19; version=3.4.1.20; version=3.4.1.28; version=3.4.1.34; version=3.4.1.35; version=3.4.1.40; version=3.4.1.6; version=3.5.1.1; version=3.5.1.17; version=3.5.1.2; version=3.5.1.20; version=3.5.1.23; version=3.5.1.30; version=3.5.1.31; version=3.5.1.37; version=3.6.1.17; version=3.6.1.21; version=3.6.1.35; version=3.6.1.36; version=3.6.1.47; version=3.6.1.5; version=3.6.1.52; version=3.7.1.22; version=3.7.1.39; version=3.7.1.5; version=3.7.1.51; version=3.7.1.59; version=3.8.1.1; version=3.8.1.19; version=3.8.1.36; version=3.8.1.39; version=3.8.1.53; version=3.9.1.1; version=3.9.1.10; version=3.9.1.24; version=3.9.1.25; version=3.9.1.28; version=3.9.1.38; version=3.9.1.52; version=3.9.1.64; version=3.9.1.66; version=3.9.1.69; version=4.0.1.1; version=4.0.2.4; version=4.0.2.5; version=4.0.3.13; version=4.0.3.17

Published CVSS scores

No CVSS assessment is available in this record.

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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer

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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