CVE-2024-20359Known exploitation

Persistent root code execution via crafted flash file

Published Apr 24, 2024 · Updated Oct 21, 2025

Code injection in Cisco ASA Software and Firepower Threat Defense allows local users to execute root-level code through a crafted flash file. The legacy VPN client and plug-in preload capability improperly validates a file read from disk0: flash, causing crafted contents to execute after the next device reload. Exploitation requires administrator-level local access to copy the file, and the injected code persists across subsequent device reboots.

CVSS severity6.0
Medium
EPSS probability19.43%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Cisco ASA Software and Firepower Threat Defense allows local users to execute root-level code through a crafted flash file. The legacy VPN client and plug-in preload capability improperly validates a file read from disk0: flash, causing crafted contents to execute after the next device reload. Exploitation requires administrator-level local access to copy the file, and the injected code persists across subsequent device reboots.

The record

CVE
CVE-2024-20359
Published
Apr 24, 2024
Updated
Oct 21, 2025
Vendor
ClamAV
Product
Cisco Adaptive Security Appliance (ASA) Software
Classifications
CWE-94, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Apr 24, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 21, 2025Record 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=9.12.1 <=9.12.4.65
  5. Affected versionversion=9.12.2
  6. Affected versionversion=9.12.2.1
  7. Affected versionversion=9.12.2.4
  8. Affected versionversion=9.12.2.5
  9. Affected versionversion=9.12.2.9
  10. Affected versionversion=9.12.3
  11. Affected versionversion=9.12.3.12
  12. Affected versionversion=9.12.3.2
  13. Affected versionversion=9.12.3.7
  14. Affected versionversion=9.12.3.9
  15. Affected versionversion=9.12.4
  16. Affected versionversion=9.12.4.10
  17. Affected versionversion=9.12.4.13
  18. Affected versionversion=9.12.4.18
  19. Affected versionversion=9.12.4.2
  20. Affected versionversion=9.12.4.24
  21. Affected versionversion=9.12.4.26
  22. Affected versionversion=9.12.4.29
  23. Affected versionversion=9.12.4.30
  24. Affected versionversion=9.12.4.35
  25. Affected versionversion=9.12.4.37
  26. Affected versionversion=9.12.4.38
  27. Affected versionversion=9.12.4.39
  28. Affected versionversion=9.12.4.4
  29. Affected versionversion=9.12.4.40
  30. Affected versionversion=9.12.4.41
  31. Affected versionversion=9.12.4.47
  32. Affected versionversion=9.12.4.48
  33. Affected versionversion=9.12.4.50
  34. Affected versionversion=9.12.4.52
  35. Affected versionversion=9.12.4.54
  36. Affected versionversion=9.12.4.55
  37. Affected versionversion=9.12.4.56
  38. Affected versionversion=9.12.4.58
  39. Affected versionversion=9.12.4.62
  40. Affected versionversion=9.12.4.65
  41. Affected versionversion=9.12.4.7
  42. Affected versionversion=9.12.4.8
  43. Affected versionversion=9.14.1
  44. Affected versionversion=9.14.1.10
  45. Affected versionversion=9.14.1.15
  46. Affected versionversion=9.14.1.19
  47. Affected versionversion=9.14.1.30
  48. Affected versionversion=9.14.1.6
  49. Affected versionversion=9.14.1 <9.14.4.23
  50. Affected versionversion=9.14.2
  51. Affected versionversion=9.14.2.13
  52. Affected versionversion=9.14.2.15
  53. Affected versionversion=9.14.2.4
  54. Affected versionversion=9.14.2.8
  55. Affected versionversion=9.14.3
  56. Affected versionversion=9.14.3.1
  57. Affected versionversion=9.14.3.11
  58. Affected versionversion=9.14.3.13
  59. Affected versionversion=9.14.3.15
  60. Affected versionversion=9.14.3.18
  61. Affected versionversion=9.14.3.9
  62. Affected versionversion=9.14.4
  63. Affected versionversion=9.14.4.12
  64. Affected versionversion=9.14.4.13
  65. Affected versionversion=9.14.4.14
  66. Affected versionversion=9.14.4.15
  67. Affected versionversion=9.14.4.17
  68. Affected versionversion=9.14.4.22
  69. Affected versionversion=9.14.4.23
  70. Affected versionversion=9.14.4.6
  71. Affected versionversion=9.14.4.7
  72. Affected versionversion=9.15.1
  73. Affected versionversion=9.15.1.1
  74. Affected versionversion=9.15.1.10
  75. Affected versionversion=9.15.1.15
  76. Affected versionversion=9.15.1.16
  77. Affected versionversion=9.15.1.17
  78. Affected versionversion=9.15.1.21
  79. Affected versionversion=9.15.1.7
  80. Affected versionversion=9.15.1 <=9.15.1.21
  81. Affected versionversion=9.16.1
  82. Affected versionversion=9.16.1.28
  83. Affected versionversion=9.16.1 <=9.16.4.55
  84. Affected versionversion=9.16.2
  85. Affected versionversion=9.16.2.11
  86. Affected versionversion=9.16.2.13
  87. Affected versionversion=9.16.2.14
  88. Affected versionversion=9.16.2.3
  89. Affected versionversion=9.16.2.7
  90. Affected versionversion=9.16.3
  91. Affected versionversion=9.16.3.14
  92. Affected versionversion=9.16.3.15
  93. Affected versionversion=9.16.3.19
  94. Affected versionversion=9.16.3.23
  95. Affected versionversion=9.16.3.3
  96. Affected versionversion=9.16.4
  97. Affected versionversion=9.16.4.14
  98. Affected versionversion=9.16.4.18
  99. Affected versionversion=9.16.4.19
  100. Affected versionversion=9.16.4.27
  101. Affected versionversion=9.16.4.38
  102. Affected versionversion=9.16.4.39
  103. Affected versionversion=9.16.4.42
  104. Affected versionversion=9.16.4.48
  105. Affected versionversion=9.16.4.55
  106. Affected versionversion=9.16.4.9
  107. Affected versionversion=9.17.1
  108. Affected versionversion=9.17.1.10
  109. Affected versionversion=9.17.1.11
  110. Affected versionversion=9.17.1.13
  111. Affected versionversion=9.17.1.15
  112. Affected versionversion=9.17.1.20
  113. Affected versionversion=9.17.1.30
  114. Affected versionversion=9.17.1.33
  115. Affected versionversion=9.17.1.7
  116. Affected versionversion=9.17.1.9
  117. Affected versionversion=9.17.1 <=9.17.1.33
  118. Affected versionversion=9.18.1
  119. Affected versionversion=9.18.1.3
  120. Affected versionversion=9.18.1 <=9.18.4.8
  121. Affected versionversion=9.18.2
  122. Affected versionversion=9.18.2.5
  123. Affected versionversion=9.18.2.7
  124. Affected versionversion=9.18.2.8
  125. Affected versionversion=9.18.3
  126. Affected versionversion=9.18.3.39
  127. Affected versionversion=9.18.3.46
  128. Affected versionversion=9.18.3.53
  129. Affected versionversion=9.18.3.55
  130. Affected versionversion=9.18.3.56
  131. Affected versionversion=9.18.4
  132. Affected versionversion=9.18.4.5
  133. Affected versionversion=9.18.4.8
  134. Affected versionversion=9.19.1
  135. Affected versionversion=9.19.1.12
  136. Affected versionversion=9.19.1.18
  137. Affected versionversion=9.19.1.22
  138. Affected versionversion=9.19.1.24
  139. Affected versionversion=9.19.1.27
  140. Affected versionversion=9.19.1.5
  141. Affected versionversion=9.19.1.9
  142. Affected versionversion=9.19.1 <=9.19.1.27
  143. Affected versionversion=9.20.1
  144. Affected versionversion=9.20.1.5
  145. Affected versionversion=9.20.1 <=9.20.2
  146. Affected versionversion=9.20.2
  147. Affected versionversion=9.8.1
  148. Affected versionversion=9.8.1.5
  149. Affected versionversion=9.8.1.7
  150. Affected versionversion=9.8.1 <=9.8.4.48
  151. Affected versionversion=9.8.2
  152. Affected versionversion=9.8.2.14
  153. Affected versionversion=9.8.2.15
  154. Affected versionversion=9.8.2.17
  155. Affected versionversion=9.8.2.20
  156. Affected versionversion=9.8.2.24
  157. Affected versionversion=9.8.2.26
  158. Affected versionversion=9.8.2.28
  159. Affected versionversion=9.8.2.33
  160. Affected versionversion=9.8.2.35
  161. Affected versionversion=9.8.2.38
  162. Affected versionversion=9.8.2.8
  163. Affected versionversion=9.8.3
  164. Affected versionversion=9.8.3.11
  165. Affected versionversion=9.8.3.14
  166. Affected versionversion=9.8.3.16
  167. Affected versionversion=9.8.3.18
  168. Affected versionversion=9.8.3.21
  169. Affected versionversion=9.8.3.26
  170. Affected versionversion=9.8.3.29
  171. Affected versionversion=9.8.3.8
  172. Affected versionversion=9.8.4
  173. Affected versionversion=9.8.4.10
  174. Affected versionversion=9.8.4.12
  175. Affected versionversion=9.8.4.15
  176. Affected versionversion=9.8.4.17
  177. Affected versionversion=9.8.4.20
  178. Affected versionversion=9.8.4.22
  179. Affected versionversion=9.8.4.25
  180. Affected versionversion=9.8.4.26
  181. Affected versionversion=9.8.4.29
  182. Affected versionversion=9.8.4.3
  183. Affected versionversion=9.8.4.32
  184. Affected versionversion=9.8.4.33
  185. Affected versionversion=9.8.4.34
  186. Affected versionversion=9.8.4.35
  187. Affected versionversion=9.8.4.39
  188. Affected versionversion=9.8.4.40
  189. Affected versionversion=9.8.4.41
  190. Affected versionversion=9.8.4.43
  191. Affected versionversion=9.8.4.44
  192. Affected versionversion=9.8.4.45
  193. Affected versionversion=9.8.4.46
  194. Affected versionversion=9.8.4.48
  195. Affected versionversion=9.8.4.7
  196. 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=9.12.1 <=9.12.4.65; version=9.12.2; version=9.12.2.1; version=9.12.2.4; 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=9.12.4.7; 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=9.14.1.6; version=9.14.1 <9.14.4.23; 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=9.14.4.23; 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=9.15.1 <=9.15.1.21; version=9.16.1; version=9.16.1.28; version=9.16.1 <=9.16.4.55; 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=9.16.4.18; 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=9.16.4.9; 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=9.17.1.7; version=9.17.1.9; version=9.17.1 <=9.17.1.33; version=9.18.1; version=9.18.1.3; version=9.18.1 <=9.18.4.8; 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=9.18.4.5; 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=9.19.1.5; version=9.19.1.9; version=9.19.1 <=9.19.1.27; version=9.20.1; version=9.20.1.5; version=9.20.1 <=9.20.2; version=9.20.2; version=9.8.1; version=9.8.1.5; version=9.8.1.7; version=9.8.1 <=9.8.4.48; 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=9.8.4.33; 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 Defenseversion=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 <=6.2.3.18; 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=6.4.0.17; 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 <=6.4.0.17; 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=6.6.0 <=6.6.7.1; 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=6.7.0 <=6.7.0.3; version=7.0.0; version=7.0.0.1; version=7.0.0 <=7.0.6; 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=7.0.6; version=7.0.6.1; version=7.1.0; version=7.1.0.1; version=7.1.0.2; version=7.1.0.3; version=7.1.0 <=7.1.0.3; version=7.2.0; version=7.2.0.1; version=7.2.0 <=7.2.4.1; version=7.2.1; version=7.2.2; version=7.2.3; version=7.2.4; version=7.2.4.1; version=7.2.5; version=7.2.5.1; version=7.3.0; version=7.3.0 <=7.3.1.1; version=7.3.1; version=7.3.1.1; version=7.4.0; version=7.4.0 <=7.4.1; version=7.4.1

Published CVSS scores

6.0CiscoCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N/E:X/RL:X/RC:X

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 exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1068Exploitation for Privilege Escalation

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.

Reported exploitation

Technologies

Your stack

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Your stack

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