CVE-2023-20234

Administrative arbitrary file overwrite via unvalidated CLI parameters

Published Aug 23, 2023 · Updated Aug 2, 2024

External control of file paths in Cisco FXOS Software on affected ASA and FTD appliances allows local users to overwrite any device file. A specific FXOS CLI command accepts path-related parameters without validation, allowing a chosen file to be created or overwritten, including system files. Reachability requires valid administrative credentials and local CLI access; Cisco reports no direct confidentiality impact.

CVSS severity4.4
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

External control of file paths in Cisco FXOS Software on affected ASA and FTD appliances allows local users to overwrite any device file. A specific FXOS CLI command accepts path-related parameters without validation, allowing a chosen file to be created or overwritten, including system files. Reachability requires valid administrative credentials and local CLI access; Cisco reports no direct confidentiality impact.

The record

CVE
CVE-2023-20234
Published
Aug 23, 2023
Updated
Aug 2, 2024
Vendor
ClamAV
Product
Cisco Adaptive Security Appliance (ASA) Software
Classifications
CWE-73, T1565.001
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Aug 23, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=9.12.4.7
  37. Affected versionversion=9.12.4.8
  38. Affected versionversion=9.14.1
  39. Affected versionversion=9.14.1.10
  40. Affected versionversion=9.14.1.15
  41. Affected versionversion=9.14.1.19
  42. Affected versionversion=9.14.1.30
  43. Affected versionversion=9.14.2
  44. Affected versionversion=9.14.2.13
  45. Affected versionversion=9.14.2.15
  46. Affected versionversion=9.14.2.4
  47. Affected versionversion=9.14.2.8
  48. Affected versionversion=9.14.3
  49. Affected versionversion=9.14.3.1
  50. Affected versionversion=9.14.3.11
  51. Affected versionversion=9.14.3.13
  52. Affected versionversion=9.14.3.15
  53. Affected versionversion=9.14.3.18
  54. Affected versionversion=9.14.3.9
  55. Affected versionversion=9.14.4
  56. Affected versionversion=9.14.4.12
  57. Affected versionversion=9.14.4.13
  58. Affected versionversion=9.14.4.14
  59. Affected versionversion=9.14.4.15
  60. Affected versionversion=9.14.4.17
  61. Affected versionversion=9.14.4.22
  62. Affected versionversion=9.14.4.6
  63. Affected versionversion=9.14.4.7
  64. Affected versionversion=9.15.1
  65. Affected versionversion=9.15.1.1
  66. Affected versionversion=9.15.1.10
  67. Affected versionversion=9.15.1.15
  68. Affected versionversion=9.15.1.16
  69. Affected versionversion=9.15.1.17
  70. Affected versionversion=9.15.1.21
  71. Affected versionversion=9.15.1.7
  72. Affected versionversion=9.16.1
  73. Affected versionversion=9.16.1.28
  74. Affected versionversion=9.16.2
  75. Affected versionversion=9.16.2.11
  76. Affected versionversion=9.16.2.13
  77. Affected versionversion=9.16.2.14
  78. Affected versionversion=9.16.2.3
  79. Affected versionversion=9.16.2.7
  80. Affected versionversion=9.16.3
  81. Affected versionversion=9.16.3.14
  82. Affected versionversion=9.16.3.15
  83. Affected versionversion=9.16.3.19
  84. Affected versionversion=9.16.3.23
  85. Affected versionversion=9.16.3.3
  86. Affected versionversion=9.16.4
  87. Affected versionversion=9.16.4.9
  88. Affected versionversion=9.17.1
  89. Affected versionversion=9.17.1.10
  90. Affected versionversion=9.17.1.11
  91. Affected versionversion=9.17.1.13
  92. Affected versionversion=9.17.1.15
  93. Affected versionversion=9.17.1.20
  94. Affected versionversion=9.17.1.7
  95. Affected versionversion=9.17.1.9
  96. Affected versionversion=9.18.1
  97. Affected versionversion=9.18.1.3
  98. Affected versionversion=9.18.2
  99. Affected versionversion=9.18.2.5
  100. Affected versionversion=9.18.2.7
  101. Affected versionversion=9.18.2.8
  102. Affected versionversion=9.19.1
  103. Affected versionversion=9.8.2
  104. Affected versionversion=9.8.2.14
  105. Affected versionversion=9.8.2.15
  106. Affected versionversion=9.8.2.17
  107. Affected versionversion=9.8.2.20
  108. Affected versionversion=9.8.2.24
  109. Affected versionversion=9.8.2.26
  110. Affected versionversion=9.8.2.28
  111. Affected versionversion=9.8.2.33
  112. Affected versionversion=9.8.2.35
  113. Affected versionversion=9.8.2.38
  114. Affected versionversion=9.8.2.8
  115. Affected versionversion=9.8.3
  116. Affected versionversion=9.8.3.11
  117. Affected versionversion=9.8.3.14
  118. Affected versionversion=9.8.3.16
  119. Affected versionversion=9.8.3.18
  120. Affected versionversion=9.8.3.21
  121. Affected versionversion=9.8.3.26
  122. Affected versionversion=9.8.3.29
  123. Affected versionversion=9.8.3.8
  124. Affected versionversion=9.8.4
  125. Affected versionversion=9.8.4.10
  126. Affected versionversion=9.8.4.12
  127. Affected versionversion=9.8.4.15
  128. Affected versionversion=9.8.4.17
  129. Affected versionversion=9.8.4.20
  130. Affected versionversion=9.8.4.22
  131. Affected versionversion=9.8.4.25
  132. Affected versionversion=9.8.4.26
  133. Affected versionversion=9.8.4.29
  134. Affected versionversion=9.8.4.3
  135. Affected versionversion=9.8.4.32
  136. Affected versionversion=9.8.4.34
  137. Affected versionversion=9.8.4.35
  138. Affected versionversion=9.8.4.39
  139. Affected versionversion=9.8.4.40
  140. Affected versionversion=9.8.4.41
  141. Affected versionversion=9.8.4.43
  142. Affected versionversion=9.8.4.44
  143. Affected versionversion=9.8.4.45
  144. Affected versionversion=9.8.4.46
  145. Affected versionversion=9.8.4.48
  146. Affected versionversion=9.8.4.7
  147. Affected versionversion=9.8.4.8

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=9.12.4.7; version=9.12.4.8; version=9.14.1; version=9.14.1.10; version=9.14.1.15; version=9.14.1.19; version=9.14.1.30; version=9.14.2; version=9.14.2.13; version=9.14.2.15; version=9.14.2.4; version=9.14.2.8; version=9.14.3; version=9.14.3.1; version=9.14.3.11; version=9.14.3.13; version=9.14.3.15; version=9.14.3.18; version=9.14.3.9; version=9.14.4; version=9.14.4.12; version=9.14.4.13; version=9.14.4.14; version=9.14.4.15; version=9.14.4.17; version=9.14.4.22; version=9.14.4.6; version=9.14.4.7; version=9.15.1; version=9.15.1.1; version=9.15.1.10; version=9.15.1.15; version=9.15.1.16; version=9.15.1.17; version=9.15.1.21; version=9.15.1.7; 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=9.16.4.9; 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=9.17.1.7; 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=9.19.1; version=9.8.2; version=9.8.2.14; version=9.8.2.15; version=9.8.2.17; version=9.8.2.20; version=9.8.2.24; version=9.8.2.26; version=9.8.2.28; version=9.8.2.33; version=9.8.2.35; version=9.8.2.38; version=9.8.2.8; version=9.8.3; version=9.8.3.11; version=9.8.3.14; version=9.8.3.16; version=9.8.3.18; version=9.8.3.21; version=9.8.3.26; version=9.8.3.29; version=9.8.3.8; version=9.8.4; version=9.8.4.10; version=9.8.4.12; version=9.8.4.15; version=9.8.4.17; version=9.8.4.20; version=9.8.4.22; version=9.8.4.25; version=9.8.4.26; version=9.8.4.29; version=9.8.4.3; version=9.8.4.32; version=9.8.4.34; version=9.8.4.35; version=9.8.4.39; version=9.8.4.40; version=9.8.4.41; version=9.8.4.43; version=9.8.4.44; version=9.8.4.45; version=9.8.4.46; version=9.8.4.48; version=9.8.4.7; version=9.8.4.8
ClamAV · Cisco Firepower Threat Defense Softwareversion=6.2.3; version=6.2.3.1; version=6.2.3.10; version=6.2.3.11; version=6.2.3.12; version=6.2.3.13; version=6.2.3.14; version=6.2.3.15; version=6.2.3.16; version=6.2.3.17; version=6.2.3.18; version=6.2.3.2; version=6.2.3.3; version=6.2.3.4; version=6.2.3.5; version=6.2.3.6; version=6.2.3.7; version=6.2.3.8; version=6.2.3.9; version=6.4.0; version=6.4.0.1; version=6.4.0.10; version=6.4.0.11; version=6.4.0.12; version=6.4.0.13; version=6.4.0.14; version=6.4.0.15; version=6.4.0.16; version=6.4.0.2; version=6.4.0.3; version=6.4.0.4; version=6.4.0.5; version=6.4.0.6; version=6.4.0.7; version=6.4.0.8; version=6.4.0.9; version=6.6.0; version=6.6.0.1; version=6.6.1; version=6.6.3; version=6.6.4; version=6.6.5; version=6.6.5.1; version=6.6.5.2; version=6.6.7; version=6.6.7.1; version=6.7.0; version=6.7.0.1; version=6.7.0.2; version=6.7.0.3; version=7.0.0; version=7.0.0.1; version=7.0.1; version=7.0.1.1; version=7.0.2; version=7.0.2.1; version=7.0.3; version=7.0.4; version=7.0.5; version=7.1.0; version=7.1.0.1; version=7.1.0.2; version=7.1.0.3; version=7.2.0; version=7.2.0.1; version=7.2.1; version=7.2.2; version=7.2.3; version=7.3.0; version=7.3.1; version=7.3.1.1
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=2.11.1.154; version=2.11.1.182; version=2.12.0.31; version=2.12.0.432; version=2.12.0.450; version=2.13.0.198; version=2.2.1.63; version=2.2.1.66; version=2.2.1.70; version=2.2.2.101; version=2.2.2.137; version=2.2.2.148; version=2.2.2.149; version=2.2.2.17; version=2.2.2.19; version=2.2.2.24; version=2.2.2.26; version=2.2.2.28; version=2.2.2.54; version=2.2.2.60; version=2.2.2.71; version=2.2.2.83; version=2.2.2.86; version=2.2.2.91; version=2.2.2.97; 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=2.8.1.105; version=2.8.1.125; version=2.8.1.139; version=2.8.1.143; version=2.8.1.152; version=2.8.1.162; version=2.8.1.164; version=2.8.1.172; version=2.8.1.186; version=2.8.1.190; version=2.9.1.131; version=2.9.1.135; version=2.9.1.143; version=2.9.1.150; version=2.9.1.158

Published CVSS scores

4.4Cisco Systems, Inc.CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N/E:X/RL:X/RC:X
6.0NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/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-73External Control of File Name or Path
T1565.001Stored Data Manipulation

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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