CVE-2026-20317Network attack vector

Unauthenticated access to protected functionality

Published Aug 19, 2026 · Updated Aug 20, 2026

Improper authentication in Cisco Secure Workload 3.10 and earlier and 4.0 allows remote attackers to gain unauthorized access via unspecified vectors. Cisco grouped multiple internally discovered flaws under this CVE and has not disclosed the affected component or the authentication step that improperly trusts or omits credential validation. The issue affects SaaS and on-premises deployments regardless of configuration; Cisco assigns a CVSS 3.1 score of 10.0, but the exact reachable privileges and post-authentication actions are not publicly broken out for this grouped record.

CVSS severity10.0
Critical
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in Cisco Secure Workload 3.10 and earlier and 4.0 allows remote attackers to gain unauthorized access via unspecified vectors. Cisco grouped multiple internally discovered flaws under this CVE and has not disclosed the affected component or the authentication step that improperly trusts or omits credential validation. The issue affects SaaS and on-premises deployments regardless of configuration; Cisco assigns a CVSS 3.1 score of 10.0, but the exact reachable privileges and post-authentication actions are not publicly broken out for this grouped record.

The record

CVE
CVE-2026-20317
Published
Aug 19, 2026
Updated
Aug 20, 2026
Vendor
ClamAV
Product
Cisco Secure Workload
Classifications
CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 20, 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 vectornetwork
Required privilegesunauthenticated

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

10.0CiscoCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/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-287Improper Authentication
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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