CVE-2026-20288Network attack vector

Root command execution via management argument injection

Published Aug 5, 2026 · Updated Aug 5, 2026

Argument injection in Cisco IMC allows remote authenticated users with Admin privileges to execute operating-system commands as root. The web-based management interface fails to neutralize command delimiters in crafted input before passing it to an underlying operating-system command. Exploitation requires an Admin account and yields root command execution, while the published vector reports no availability impact.

CVSS severity6.5
Medium
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Argument injection in Cisco IMC allows remote authenticated users with Admin privileges to execute operating-system commands as root. The web-based management interface fails to neutralize command delimiters in crafted input before passing it to an underlying operating-system command. Exploitation requires an Admin account and yields root command execution, while the published vector reports no availability impact.

The record

CVE
CVE-2026-20288
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
ClamAV
Product
Cisco Unified Computing System (Standalone)
Classifications
CWE-146, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=3.1(1d)
  2. Affected versionversion=3.1(2b)
  3. Affected versionversion=3.1(2c)
  4. Affected versionversion=3.1(2d)
  5. Affected versionversion=3.1(2e)
  6. Affected versionversion=3.1(2g)
  7. Affected versionversion=3.1(2i)
  8. Affected versionversion=3.1(3a)
  9. Affected versionversion=3.1(3b)
  10. Affected versionversion=3.1(3c)
  11. Affected versionversion=3.1(3d)
  12. Affected versionversion=3.1(3g)
  13. Affected versionversion=3.1(3h)
  14. Affected versionversion=3.1(3i)
  15. Affected versionversion=3.1(3j)
  16. Affected versionversion=3.1(3k)
  17. Affected versionversion=4.0(1.240)
  18. Affected versionversion=4.0(1a)
  19. Affected versionversion=4.0(1b)
  20. Affected versionversion=4.0(1c)
  21. Affected versionversion=4.0(1d)
  22. Affected versionversion=4.0(1e)
  23. Affected versionversion=4.0(1g)
  24. Affected versionversion=4.0(1h)
  25. Affected versionversion=4.0(2c)
  26. Affected versionversion=4.0(2d)
  27. Affected versionversion=4.0(2f)
  28. Affected versionversion=4.0(2g)
  29. Affected versionversion=4.0(2h)
  30. Affected versionversion=4.0(2i)
  31. Affected versionversion=4.0(2k)
  32. Affected versionversion=4.0(2l)
  33. Affected versionversion=4.0(2m)
  34. Affected versionversion=4.0(2n)
  35. Affected versionversion=4.0(2o)
  36. Affected versionversion=4.0(2p)
  37. Affected versionversion=4.0(2q)
  38. Affected versionversion=4.0(2r)
  39. Affected versionversion=4.0(4b)
  40. Affected versionversion=4.0(4c)
  41. Affected versionversion=4.0(4d)
  42. Affected versionversion=4.0(4e)
  43. Affected versionversion=4.0(4f)
  44. Affected versionversion=4.0(4h)
  45. Affected versionversion=4.0(4i)
  46. Affected versionversion=4.0(4j)
  47. Affected versionversion=4.0(4k)
  48. Affected versionversion=4.0(4l)
  49. Affected versionversion=4.0(4m)
  50. Affected versionversion=4.0(4n)
  51. Affected versionversion=4.1(1c)
  52. Affected versionversion=4.1(1d)
  53. Affected versionversion=4.1(1f)
  54. Affected versionversion=4.1(1g)
  55. Affected versionversion=4.1(1h)
  56. Affected versionversion=4.1(2a)
  57. Affected versionversion=4.1(2b)
  58. Affected versionversion=4.1(2d)
  59. Affected versionversion=4.1(2e)
  60. Affected versionversion=4.1(2f)
  61. Affected versionversion=4.1(2g)
  62. Affected versionversion=4.1(2h)
  63. Affected versionversion=4.1(2j)
  64. Affected versionversion=4.1(2k)
  65. Affected versionversion=4.1(2l)
  66. Affected versionversion=4.1(2m)
  67. Affected versionversion=4.1(3b)
  68. Affected versionversion=4.1(3c)
  69. Affected versionversion=4.1(3d)
  70. Affected versionversion=4.1(3f)
  71. Affected versionversion=4.1(3g)
  72. Affected versionversion=4.1(3h)
  73. Affected versionversion=4.1(3i)
  74. Affected versionversion=4.1(3l)
  75. Affected versionversion=4.1(3m)
  76. Affected versionversion=4.1(3n)
  77. Affected versionversion=4.2(1a)
  78. Affected versionversion=4.2(1b)
  79. Affected versionversion=4.2(1c)
  80. Affected versionversion=4.2(1e)
  81. Affected versionversion=4.2(1f)
  82. Affected versionversion=4.2(1g)
  83. Affected versionversion=4.2(1i)
  84. Affected versionversion=4.2(1j)
  85. Affected versionversion=4.2(2a)
  86. Affected versionversion=4.2(2f)
  87. Affected versionversion=4.2(2g)
  88. Affected versionversion=4.2(3b)
  89. Affected versionversion=4.2(3d)
  90. Affected versionversion=4.2(3e)
  91. Affected versionversion=4.2(3g)
  92. Affected versionversion=4.2(3h)
  93. Affected versionversion=4.2(3i)
  94. Affected versionversion=4.2(3j)
  95. Affected versionversion=4.2(3k)
  96. Affected versionversion=4.2(3l)
  97. Affected versionversion=4.2(3m)
  98. Affected versionversion=4.2(3n)
  99. Affected versionversion=4.2(3o)
  100. Affected versionversion=4.2(3p)
  101. Affected versionversion=4.2(3q)
  102. Affected versionversion=4.3(1.230097)
  103. Affected versionversion=4.3(1.230124)
  104. Affected versionversion=4.3(1.230138)
  105. Affected versionversion=4.3(2.230207)
  106. Affected versionversion=4.3(2.230270)
  107. Affected versionversion=4.3(2.240002)
  108. Affected versionversion=4.3(2.240009)
  109. Affected versionversion=4.3(2.240037)
  110. Affected versionversion=4.3(2.240053)
  111. Affected versionversion=4.3(2.240077)
  112. Affected versionversion=4.3(2.240090)
  113. Affected versionversion=4.3(2.240107)
  114. Affected versionversion=4.3(2.250016)
  115. Affected versionversion=4.3(2.250021)
  116. Affected versionversion=4.3(2.250022)
  117. Affected versionversion=4.3(2.250037)
  118. Affected versionversion=4.3(2.250045)
  119. Affected versionversion=4.3(2.250063)
  120. Affected versionversion=4.3(2.260007)
  121. Affected versionversion=4.3(3.240022)
  122. Affected versionversion=4.3(3.240041)
  123. Affected versionversion=4.3(3.240043)
  124. Affected versionversion=4.3(4.240142)
  125. Affected versionversion=4.3(4.240152)
  126. Affected versionversion=4.3(4.241014)
  127. Affected versionversion=4.3(4.241063)
  128. Affected versionversion=4.3(4.242028)
  129. Affected versionversion=4.3(4.242038)
  130. Affected versionversion=4.3(4.242066)
  131. Affected versionversion=4.3(4.252001)
  132. Affected versionversion=4.3(4.252002)
  133. Affected versionversion=4.3(5.240021)
  134. Affected versionversion=4.3(5.250001)
  135. Affected versionversion=4.3(5.250030)
  136. Affected versionversion=4.3(5.250033)
  137. Affected versionversion=4.3(5.250043)
  138. Affected versionversion=4.3(5.250045)
  139. Affected versionversion=4.3(6.250039)
  140. Affected versionversion=4.3(6.250040)
  141. Affected versionversion=4.3(6.250044)
  142. Affected versionversion=4.3(6.250053)
  143. Affected versionversion=4.3(6.250060)
  144. Affected versionversion=4.3(6.250101)
  145. Affected versionversion=4.3(6.250117)
  146. Affected versionversion=4.3(6.260003)
  147. Affected versionversion=4.3(6.260017)
  148. Affected versionversion=4.3(6.260033)
  149. Affected versionversion=6.0(1.250127)
  150. Affected versionversion=6.0(1.250130)
  151. Affected versionversion=6.0(1.250131)
  152. Affected versionversion=6.0(1.250174)
  153. Affected versionversion=6.0(1.250192)
  154. Affected versionversion=6.0(1.250194)
  155. Affected versionversion=6.0(2.260044)
  156. Affected versionversion=6.0(2.260069)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

ClamAV · Cisco Unified Computing System (Standalone)version=3.1(1d); version=3.1(2b); version=3.1(2c); version=3.1(2d); version=3.1(2e); version=3.1(2g); version=3.1(2i); version=3.1(3a); version=3.1(3b); version=3.1(3c); version=3.1(3d); version=3.1(3g); version=3.1(3h); version=3.1(3i); version=3.1(3j); version=3.1(3k); version=4.0(1.240); version=4.0(1a); version=4.0(1b); version=4.0(1c); version=4.0(1d); version=4.0(1e); version=4.0(1g); version=4.0(1h); version=4.0(2c); version=4.0(2d); version=4.0(2f); version=4.0(2g); version=4.0(2h); version=4.0(2i); version=4.0(2k); version=4.0(2l); version=4.0(2m); version=4.0(2n); version=4.0(2o); version=4.0(2p); version=4.0(2q); version=4.0(2r); version=4.0(4b); version=4.0(4c); version=4.0(4d); version=4.0(4e); version=4.0(4f); version=4.0(4h); version=4.0(4i); version=4.0(4j); version=4.0(4k); version=4.0(4l); version=4.0(4m); version=4.0(4n); version=4.1(1c); version=4.1(1d); version=4.1(1f); version=4.1(1g); version=4.1(1h); version=4.1(2a); version=4.1(2b); version=4.1(2d); version=4.1(2e); version=4.1(2f); version=4.1(2g); version=4.1(2h); version=4.1(2j); version=4.1(2k); version=4.1(2l); version=4.1(2m); version=4.1(3b); version=4.1(3c); version=4.1(3d); version=4.1(3f); version=4.1(3g); version=4.1(3h); version=4.1(3i); version=4.1(3l); version=4.1(3m); version=4.1(3n); version=4.2(1a); version=4.2(1b); version=4.2(1c); version=4.2(1e); version=4.2(1f); version=4.2(1g); version=4.2(1i); version=4.2(1j); version=4.2(2a); version=4.2(2f); version=4.2(2g); version=4.2(3b); version=4.2(3d); version=4.2(3e); version=4.2(3g); version=4.2(3h); version=4.2(3i); version=4.2(3j); version=4.2(3k); version=4.2(3l); version=4.2(3m); version=4.2(3n); version=4.2(3o); version=4.2(3p); version=4.2(3q); version=4.3(1.230097); version=4.3(1.230124); version=4.3(1.230138); version=4.3(2.230207); version=4.3(2.230270); version=4.3(2.240002); version=4.3(2.240009); version=4.3(2.240037); version=4.3(2.240053); version=4.3(2.240077); version=4.3(2.240090); version=4.3(2.240107); version=4.3(2.250016); version=4.3(2.250021); version=4.3(2.250022); version=4.3(2.250037); version=4.3(2.250045); version=4.3(2.250063); version=4.3(2.260007); version=4.3(3.240022); version=4.3(3.240041); version=4.3(3.240043); version=4.3(4.240142); version=4.3(4.240152); version=4.3(4.241014); version=4.3(4.241063); version=4.3(4.242028); version=4.3(4.242038); version=4.3(4.242066); version=4.3(4.252001); version=4.3(4.252002); version=4.3(5.240021); version=4.3(5.250001); version=4.3(5.250030); version=4.3(5.250033); version=4.3(5.250043); version=4.3(5.250045); version=4.3(6.250039); version=4.3(6.250040); version=4.3(6.250044); version=4.3(6.250053); version=4.3(6.250060); version=4.3(6.250101); version=4.3(6.250117); version=4.3(6.260003); version=4.3(6.260017); version=4.3(6.260033); version=6.0(1.250127); version=6.0(1.250130); version=6.0(1.250131); version=6.0(1.250174); version=6.0(1.250192); version=6.0(1.250194); version=6.0(2.260044); version=6.0(2.260069)
ClamAV · Cisco Unified Computing System E-Series Software (UCSE)version=3.1.0; version=3.1.1; version=3.1.2; version=3.1.3; version=3.1.4; version=3.1.5; version=3.2.1; version=3.2.10; version=3.2.11.1; version=3.2.11.3; version=3.2.11.5; version=3.2.12.2; version=3.2.13.6; version=3.2.14; version=3.2.15; version=3.2.15.3; version=3.2.16.1; version=3.2.17.1; version=3.2.2; version=3.2.3; version=3.2.4; version=3.2.6; version=3.2.7; version=3.2.8; version=4.11.1; version=4.12.1; version=4.12.2; version=4.15.2; version=4.15.3

Published CVSS scores

6.5Cisco Systems, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-146Improper Neutralization of Expression/Command Delimiters
T1059Command and Scripting Interpreter

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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