CVE-2026-20099

Root command execution via unvalidated management arguments

Published Feb 25, 2026 · Updated Feb 25, 2026

OS command injection in Cisco FXOS and UCS Manager allows local administrative users to execute commands with root privileges. The web management interface passes crafted command arguments to the underlying operating system without sufficient input validation. Administrative authentication and local access are required; successful exploitation grants root-level command execution on affected appliances.

CVSS severity6.7
Medium
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Cisco FXOS and UCS Manager allows local administrative users to execute commands with root privileges. The web management interface passes crafted command arguments to the underlying operating system without sufficient input validation. Administrative authentication and local access are required; successful exploitation grants root-level command execution on affected appliances.

The record

CVE
CVE-2026-20099
Published
Feb 25, 2026
Updated
Feb 25, 2026
Vendor
ClamAV
Product
Cisco Adaptive Security Appliance (ASA) Software
Classifications
CWE-78, T1059
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 25, 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=9.12.1
  2. Affected versionversion=9.12.1.2
  3. Affected versionversion=9.12.1.3
  4. Affected versionversion=9.12.2
  5. Affected versionversion=9.12.2.1
  6. Affected versionversion=9.12.2.5
  7. Affected versionversion=9.12.2.9
  8. Affected versionversion=9.12.3
  9. Affected versionversion=9.12.3.12
  10. Affected versionversion=9.12.3.2
  11. Affected versionversion=9.12.3.7
  12. Affected versionversion=9.12.3.9
  13. Affected versionversion=9.12.4
  14. Affected versionversion=9.12.4.10
  15. Affected versionversion=9.12.4.13
  16. Affected versionversion=9.12.4.18
  17. Affected versionversion=9.12.4.2
  18. Affected versionversion=9.12.4.24
  19. Affected versionversion=9.12.4.26
  20. Affected versionversion=9.12.4.29
  21. Affected versionversion=9.12.4.30
  22. Affected versionversion=9.12.4.35
  23. Affected versionversion=9.12.4.37
  24. Affected versionversion=9.12.4.38
  25. Affected versionversion=9.12.4.39
  26. Affected versionversion=9.12.4.4
  27. Affected versionversion=9.12.4.40
  28. Affected versionversion=9.12.4.41
  29. Affected versionversion=9.12.4.47
  30. Affected versionversion=9.12.4.48
  31. Affected versionversion=9.12.4.50
  32. Affected versionversion=9.12.4.52
  33. Affected versionversion=9.12.4.54
  34. Affected versionversion=9.12.4.55
  35. Affected versionversion=9.12.4.56
  36. Affected versionversion=9.12.4.58
  37. Affected versionversion=9.12.4.62
  38. Affected versionversion=9.12.4.65
  39. Affected versionversion=9.12.4.67
  40. Affected versionversion=9.12.4.7
  41. Affected versionversion=9.12.4.8
  42. Affected versionversion=9.16.1
  43. Affected versionversion=9.16.1.28
  44. Affected versionversion=9.16.2
  45. Affected versionversion=9.16.2.11
  46. Affected versionversion=9.16.2.13
  47. Affected versionversion=9.16.2.14
  48. Affected versionversion=9.16.2.3
  49. Affected versionversion=9.16.2.7
  50. Affected versionversion=9.16.3
  51. Affected versionversion=9.16.3.14
  52. Affected versionversion=9.16.3.15
  53. Affected versionversion=9.16.3.19
  54. Affected versionversion=9.16.3.23
  55. Affected versionversion=9.16.3.3
  56. Affected versionversion=9.16.4
  57. Affected versionversion=9.16.4.14
  58. Affected versionversion=9.16.4.19
  59. Affected versionversion=9.16.4.27
  60. Affected versionversion=9.16.4.38
  61. Affected versionversion=9.16.4.39
  62. Affected versionversion=9.16.4.42
  63. Affected versionversion=9.16.4.48
  64. Affected versionversion=9.16.4.55
  65. Affected versionversion=9.16.4.57
  66. Affected versionversion=9.16.4.61
  67. Affected versionversion=9.16.4.62
  68. Affected versionversion=9.16.4.67
  69. Affected versionversion=9.16.4.71
  70. Affected versionversion=9.16.4.76
  71. Affected versionversion=9.16.4.82
  72. Affected versionversion=9.16.4.84
  73. Affected versionversion=9.16.4.9
  74. Affected versionversion=9.17.1
  75. Affected versionversion=9.17.1.10
  76. Affected versionversion=9.17.1.11
  77. Affected versionversion=9.17.1.13
  78. Affected versionversion=9.17.1.15
  79. Affected versionversion=9.17.1.20
  80. Affected versionversion=9.17.1.30
  81. Affected versionversion=9.17.1.33
  82. Affected versionversion=9.17.1.39
  83. Affected versionversion=9.17.1.45
  84. Affected versionversion=9.17.1.7
  85. Affected versionversion=9.17.1.9
  86. Affected versionversion=9.18.1
  87. Affected versionversion=9.18.1.3
  88. Affected versionversion=9.18.2
  89. Affected versionversion=9.18.2.5
  90. Affected versionversion=9.18.2.7
  91. Affected versionversion=9.18.2.8
  92. Affected versionversion=9.18.3
  93. Affected versionversion=9.18.3.39
  94. Affected versionversion=9.18.3.46
  95. Affected versionversion=9.18.3.53
  96. Affected versionversion=9.18.3.55
  97. Affected versionversion=9.18.3.56
  98. Affected versionversion=9.18.4
  99. Affected versionversion=9.18.4.22
  100. Affected versionversion=9.18.4.24
  101. Affected versionversion=9.18.4.29
  102. Affected versionversion=9.18.4.34
  103. Affected versionversion=9.18.4.40
  104. Affected versionversion=9.18.4.47
  105. Affected versionversion=9.18.4.5
  106. Affected versionversion=9.18.4.50
  107. Affected versionversion=9.18.4.52
  108. Affected versionversion=9.18.4.53
  109. Affected versionversion=9.18.4.57
  110. Affected versionversion=9.18.4.8
  111. Affected versionversion=9.19.1
  112. Affected versionversion=9.19.1.12
  113. Affected versionversion=9.19.1.18
  114. Affected versionversion=9.19.1.22
  115. Affected versionversion=9.19.1.24
  116. Affected versionversion=9.19.1.27
  117. Affected versionversion=9.19.1.28
  118. Affected versionversion=9.19.1.31
  119. Affected versionversion=9.19.1.37
  120. Affected versionversion=9.19.1.42
  121. Affected versionversion=9.19.1.5
  122. Affected versionversion=9.19.1.9
  123. Affected versionversion=9.20.2
  124. Affected versionversion=9.20.2.10
  125. Affected versionversion=9.20.2.21
  126. Affected versionversion=9.20.2.22
  127. Affected versionversion=9.20.3
  128. Affected versionversion=9.20.3.10
  129. Affected versionversion=9.20.3.13
  130. Affected versionversion=9.20.3.16
  131. Affected versionversion=9.20.3.20
  132. Affected versionversion=9.20.3.4
  133. Affected versionversion=9.20.3.7
  134. Affected versionversion=9.20.4
  135. Affected versionversion=9.20.4.7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

ClamAV · Cisco Adaptive Security Appliance (ASA) Softwareversion=9.12.1; version=9.12.1.2; version=9.12.1.3; version=9.12.2; version=9.12.2.1; version=9.12.2.5; version=9.12.2.9; version=9.12.3; version=9.12.3.12; version=9.12.3.2; version=9.12.3.7; version=9.12.3.9; version=9.12.4; version=9.12.4.10; version=9.12.4.13; version=9.12.4.18; version=9.12.4.2; version=9.12.4.24; version=9.12.4.26; version=9.12.4.29; version=9.12.4.30; version=9.12.4.35; version=9.12.4.37; version=9.12.4.38; version=9.12.4.39; version=9.12.4.4; version=9.12.4.40; version=9.12.4.41; version=9.12.4.47; version=9.12.4.48; version=9.12.4.50; version=9.12.4.52; version=9.12.4.54; version=9.12.4.55; version=9.12.4.56; version=9.12.4.58; version=9.12.4.62; version=9.12.4.65; version=9.12.4.67; version=9.12.4.7; version=9.12.4.8; version=9.16.1; version=9.16.1.28; version=9.16.2; version=9.16.2.11; version=9.16.2.13; version=9.16.2.14; version=9.16.2.3; version=9.16.2.7; version=9.16.3; version=9.16.3.14; version=9.16.3.15; version=9.16.3.19; version=9.16.3.23; version=9.16.3.3; version=9.16.4; version=9.16.4.14; version=9.16.4.19; version=9.16.4.27; version=9.16.4.38; version=9.16.4.39; version=9.16.4.42; version=9.16.4.48; version=9.16.4.55; version=9.16.4.57; version=9.16.4.61; version=9.16.4.62; version=9.16.4.67; version=9.16.4.71; version=9.16.4.76; version=9.16.4.82; version=9.16.4.84; version=9.16.4.9; version=9.17.1; version=9.17.1.10; version=9.17.1.11; version=9.17.1.13; version=9.17.1.15; version=9.17.1.20; version=9.17.1.30; version=9.17.1.33; version=9.17.1.39; version=9.17.1.45; version=9.17.1.7; version=9.17.1.9; version=9.18.1; version=9.18.1.3; version=9.18.2; version=9.18.2.5; version=9.18.2.7; version=9.18.2.8; version=9.18.3; version=9.18.3.39; version=9.18.3.46; version=9.18.3.53; version=9.18.3.55; version=9.18.3.56; version=9.18.4; version=9.18.4.22; version=9.18.4.24; version=9.18.4.29; version=9.18.4.34; version=9.18.4.40; version=9.18.4.47; version=9.18.4.5; version=9.18.4.50; version=9.18.4.52; version=9.18.4.53; version=9.18.4.57; version=9.18.4.8; version=9.19.1; version=9.19.1.12; version=9.19.1.18; version=9.19.1.22; version=9.19.1.24; version=9.19.1.27; version=9.19.1.28; version=9.19.1.31; version=9.19.1.37; version=9.19.1.42; version=9.19.1.5; version=9.19.1.9; version=9.20.2; version=9.20.2.10; version=9.20.2.21; version=9.20.2.22; version=9.20.3; version=9.20.3.10; version=9.20.3.13; version=9.20.3.16; version=9.20.3.20; version=9.20.3.4; version=9.20.3.7; version=9.20.4; version=9.20.4.7
ClamAV · Cisco Firepower eXtensible Operating System (FXOS)version=2.10.1.159; version=2.10.1.166; version=2.10.1.179; version=2.10.1.207; version=2.10.1.234; version=2.10.1.245; version=2.10.1.271; version=2.10.1.312; version=2.10.1.328; version=2.10.1.341; version=2.11.1.154; version=2.11.1.182; version=2.11.1.200; version=2.11.1.205; version=2.11.1.228; version=2.11.1.236; version=2.12.0.31; version=2.12.0.432; version=2.12.0.450; version=2.12.0.467; version=2.12.0.498; version=2.12.1.29; version=2.12.1.48; version=2.12.1.72; version=2.12.1.84; version=2.12.1.95; version=2.13.0.198; version=2.13.0.212; version=2.13.0.243; version=2.13.0.276; version=2.13.0.357; version=2.14.1.131; version=2.14.1.143; version=2.14.1.163; version=2.14.1.167; version=2.14.1.186; version=2.14.1.187; version=2.16.0.128; version=2.16.0.136; version=2.17.0.518; version=2.3.1.110; version=2.3.1.111; version=2.3.1.130; version=2.3.1.144; version=2.3.1.145; version=2.3.1.155; version=2.3.1.166; version=2.3.1.173; version=2.3.1.179; version=2.3.1.180; version=2.3.1.190; version=2.3.1.215; version=2.3.1.216; version=2.3.1.219; version=2.3.1.230; version=2.3.1.56; version=2.3.1.58; version=2.3.1.66; version=2.3.1.73; version=2.3.1.75; version=2.3.1.88; version=2.3.1.91; version=2.3.1.93; version=2.3.1.99; version=2.6.1.131; version=2.6.1.157; version=2.6.1.166; version=2.6.1.169; version=2.6.1.174; version=2.6.1.187; version=2.6.1.192; version=2.6.1.204; version=2.6.1.214; version=2.6.1.224; version=2.6.1.229; version=2.6.1.230; version=2.6.1.238; version=2.6.1.239; version=2.6.1.254; version=2.6.1.259; version=2.6.1.264; version=2.6.1.265; version=2.6.1.272
ClamAV · Cisco UCS Managerversion=4.0(1a); version=4.0(1b); version=4.0(1c); version=4.0(1d); version=4.0(2a); version=4.0(2b); version=4.0(2d); version=4.0(2e); version=4.0(4a); version=4.0(4b); version=4.0(4c); version=4.0(4d); version=4.0(4e); version=4.0(4f); version=4.0(4g); version=4.0(4h); version=4.0(4i); version=4.0(4k); version=4.0(4l); version=4.0(4m); version=4.0(4n); version=4.0(4o); version=4.1(1a); version=4.1(1b); version=4.1(1c); version=4.1(1d); version=4.1(1e); version=4.1(2a); version=4.1(2b); version=4.1(2c); version=4.1(3a); version=4.1(3b); version=4.1(3c); version=4.1(3d); version=4.1(3e); version=4.1(3f); version=4.1(3h); version=4.1(3i); version=4.1(3j); version=4.1(3k); version=4.1(3l); version=4.1(3m); version=4.1(3n); version=4.1(4a); version=4.2(1c); version=4.2(1d); version=4.2(1f); version=4.2(1i); version=4.2(1k); version=4.2(1l); version=4.2(1m); version=4.2(1n); version=4.2(2a); version=4.2(2c); version=4.2(2d); version=4.2(2e); 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=4.3(2b); version=4.3(2c); version=4.3(2e); version=4.3(2f); version=4.3(3a); version=4.3(3c); version=4.3(4a); version=4.3(4b); version=4.3(4c); version=4.3(4d); version=4.3(4e); version=4.3(4f); version=4.3(5a); version=4.3(5c); version=4.3(5d); version=4.3(5e); version=4.3(6a); version=4.3(6b)

Published CVSS scores

6.7Cisco Systems, Inc.CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
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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