CVE-2024-20341Network attack vector

Cross-site scripting via unvalidated application endpoint input

Published Oct 23, 2024 · Updated Oct 24, 2024

Cross-site scripting in Cisco ASA and FTD VPN web client services allows remote attackers to execute script in a user's browser. Application endpoints accept user-supplied input without proper validation, allowing crafted values to execute as HTML or script in the web-services page context. The target must run a vulnerable release with applicable VPN services enabled, and a user must follow the attacker-crafted link; authentication is not required.

CVSS severity6.1
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Cisco ASA and FTD VPN web client services allows remote attackers to execute script in a user's browser. Application endpoints accept user-supplied input without proper validation, allowing crafted values to execute as HTML or script in the web-services page context. The target must run a vulnerable release with applicable VPN services enabled, and a user must follow the attacker-crafted link; authentication is not required.

The record

CVE
CVE-2024-20341
Published
Oct 23, 2024
Updated
Oct 24, 2024
Vendor
ClamAV
Product
Cisco Adaptive Security Appliance (ASA) Software
Classifications
CWE-80, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 23, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 24, 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=9.12.2.4
  7. Affected versionversion=9.12.2.5
  8. Affected versionversion=9.12.2.9
  9. Affected versionversion=9.12.3
  10. Affected versionversion=9.12.3.12
  11. Affected versionversion=9.12.3.2
  12. Affected versionversion=9.12.3.7
  13. Affected versionversion=9.12.3.9
  14. Affected versionversion=9.12.4
  15. Affected versionversion=9.12.4.10
  16. Affected versionversion=9.12.4.13
  17. Affected versionversion=9.12.4.18
  18. Affected versionversion=9.12.4.2
  19. Affected versionversion=9.12.4.24
  20. Affected versionversion=9.12.4.26
  21. Affected versionversion=9.12.4.29
  22. Affected versionversion=9.12.4.30
  23. Affected versionversion=9.12.4.35
  24. Affected versionversion=9.12.4.37
  25. Affected versionversion=9.12.4.38
  26. Affected versionversion=9.12.4.39
  27. Affected versionversion=9.12.4.4
  28. Affected versionversion=9.12.4.40
  29. Affected versionversion=9.12.4.41
  30. Affected versionversion=9.12.4.47
  31. Affected versionversion=9.12.4.48
  32. Affected versionversion=9.12.4.50
  33. Affected versionversion=9.12.4.52
  34. Affected versionversion=9.12.4.54
  35. Affected versionversion=9.12.4.55
  36. Affected versionversion=9.12.4.56
  37. Affected versionversion=9.12.4.58
  38. Affected versionversion=9.12.4.62
  39. Affected versionversion=9.12.4.65
  40. Affected versionversion=9.12.4.7
  41. Affected versionversion=9.12.4.8
  42. Affected versionversion=9.14.1
  43. Affected versionversion=9.14.1.10
  44. Affected versionversion=9.14.1.15
  45. Affected versionversion=9.14.1.19
  46. Affected versionversion=9.14.1.30
  47. Affected versionversion=9.14.1.6
  48. Affected versionversion=9.14.2
  49. Affected versionversion=9.14.2.13
  50. Affected versionversion=9.14.2.15
  51. Affected versionversion=9.14.2.4
  52. Affected versionversion=9.14.2.8
  53. Affected versionversion=9.14.3
  54. Affected versionversion=9.14.3.1
  55. Affected versionversion=9.14.3.11
  56. Affected versionversion=9.14.3.13
  57. Affected versionversion=9.14.3.15
  58. Affected versionversion=9.14.3.18
  59. Affected versionversion=9.14.3.9
  60. Affected versionversion=9.14.4
  61. Affected versionversion=9.14.4.12
  62. Affected versionversion=9.14.4.13
  63. Affected versionversion=9.14.4.14
  64. Affected versionversion=9.14.4.15
  65. Affected versionversion=9.14.4.17
  66. Affected versionversion=9.14.4.22
  67. Affected versionversion=9.14.4.23
  68. Affected versionversion=9.14.4.24
  69. Affected versionversion=9.14.4.6
  70. Affected versionversion=9.14.4.7
  71. Affected versionversion=9.15.1
  72. Affected versionversion=9.15.1.1
  73. Affected versionversion=9.15.1.10
  74. Affected versionversion=9.15.1.15
  75. Affected versionversion=9.15.1.16
  76. Affected versionversion=9.15.1.17
  77. Affected versionversion=9.15.1.21
  78. Affected versionversion=9.15.1.7
  79. Affected versionversion=9.16.1
  80. Affected versionversion=9.16.1.28
  81. Affected versionversion=9.16.2
  82. Affected versionversion=9.16.2.11
  83. Affected versionversion=9.16.2.13
  84. Affected versionversion=9.16.2.14
  85. Affected versionversion=9.16.2.3
  86. Affected versionversion=9.16.2.7
  87. Affected versionversion=9.16.3
  88. Affected versionversion=9.16.3.14
  89. Affected versionversion=9.16.3.15
  90. Affected versionversion=9.16.3.19
  91. Affected versionversion=9.16.3.23
  92. Affected versionversion=9.16.3.3
  93. Affected versionversion=9.16.4
  94. Affected versionversion=9.16.4.14
  95. Affected versionversion=9.16.4.18
  96. Affected versionversion=9.16.4.19
  97. Affected versionversion=9.16.4.27
  98. Affected versionversion=9.16.4.38
  99. Affected versionversion=9.16.4.39
  100. Affected versionversion=9.16.4.42
  101. Affected versionversion=9.16.4.48
  102. Affected versionversion=9.16.4.9
  103. Affected versionversion=9.17.1
  104. Affected versionversion=9.17.1.10
  105. Affected versionversion=9.17.1.11
  106. Affected versionversion=9.17.1.13
  107. Affected versionversion=9.17.1.15
  108. Affected versionversion=9.17.1.20
  109. Affected versionversion=9.17.1.30
  110. Affected versionversion=9.17.1.33
  111. Affected versionversion=9.17.1.7
  112. Affected versionversion=9.17.1.9
  113. Affected versionversion=9.18.1
  114. Affected versionversion=9.18.1.3
  115. Affected versionversion=9.18.2
  116. Affected versionversion=9.18.2.5
  117. Affected versionversion=9.18.2.7
  118. Affected versionversion=9.18.2.8
  119. Affected versionversion=9.18.3
  120. Affected versionversion=9.18.3.39
  121. Affected versionversion=9.18.3.46
  122. Affected versionversion=9.18.3.53
  123. Affected versionversion=9.18.3.55
  124. Affected versionversion=9.18.3.56
  125. Affected versionversion=9.18.4
  126. Affected versionversion=9.18.4.5
  127. Affected versionversion=9.18.4.8
  128. Affected versionversion=9.19.1
  129. Affected versionversion=9.19.1.12
  130. Affected versionversion=9.19.1.18
  131. Affected versionversion=9.19.1.22
  132. Affected versionversion=9.19.1.24
  133. Affected versionversion=9.19.1.27
  134. Affected versionversion=9.19.1.5
  135. Affected versionversion=9.19.1.9
  136. Affected versionversion=9.20.1
  137. Affected versionversion=9.20.1.5
  138. Affected versionversion=9.20.2
  139. Affected versionversion=9.8.1
  140. Affected versionversion=9.8.1.5
  141. Affected versionversion=9.8.1.7
  142. Affected versionversion=9.8.2
  143. Affected versionversion=9.8.2.14
  144. Affected versionversion=9.8.2.15
  145. Affected versionversion=9.8.2.17
  146. Affected versionversion=9.8.2.20
  147. Affected versionversion=9.8.2.24
  148. Affected versionversion=9.8.2.26
  149. Affected versionversion=9.8.2.28
  150. Affected versionversion=9.8.2.33
  151. Affected versionversion=9.8.2.35
  152. Affected versionversion=9.8.2.38
  153. Affected versionversion=9.8.2.45
  154. Affected versionversion=9.8.2.8
  155. Affected versionversion=9.8.3
  156. Affected versionversion=9.8.3.11
  157. Affected versionversion=9.8.3.14
  158. Affected versionversion=9.8.3.16
  159. Affected versionversion=9.8.3.18
  160. Affected versionversion=9.8.3.21
  161. Affected versionversion=9.8.3.26
  162. Affected versionversion=9.8.3.29
  163. Affected versionversion=9.8.3.8
  164. Affected versionversion=9.8.4
  165. Affected versionversion=9.8.4.10
  166. Affected versionversion=9.8.4.12
  167. Affected versionversion=9.8.4.15
  168. Affected versionversion=9.8.4.17
  169. Affected versionversion=9.8.4.20
  170. Affected versionversion=9.8.4.22
  171. Affected versionversion=9.8.4.25
  172. Affected versionversion=9.8.4.26
  173. Affected versionversion=9.8.4.29
  174. Affected versionversion=9.8.4.3
  175. Affected versionversion=9.8.4.32
  176. Affected versionversion=9.8.4.33
  177. Affected versionversion=9.8.4.34
  178. Affected versionversion=9.8.4.35
  179. Affected versionversion=9.8.4.39
  180. Affected versionversion=9.8.4.40
  181. Affected versionversion=9.8.4.41
  182. Affected versionversion=9.8.4.43
  183. Affected versionversion=9.8.4.44
  184. Affected versionversion=9.8.4.45
  185. Affected versionversion=9.8.4.46
  186. Affected versionversion=9.8.4.48
  187. Affected versionversion=9.8.4.7
  188. Affected versionversion=9.8.4.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

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=9.12.2.4; 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=9.14.2; 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=9.14.4.24; 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=9.16.4.14; 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=9.16.4.9; 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=9.18.1; 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=9.18.4.5; 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=9.20.1; version=9.20.1.5; version=9.20.2; version=9.8.1; version=9.8.1.5; version=9.8.1.7; 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=9.8.2.45; 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=6.2.3.7; 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=6.4.0.7; 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=6.6.7.2; 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=7.0.6; 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=7.2.0; version=7.2.0.1; 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=7.2.5.2; version=7.3.0; version=7.3.1; version=7.3.1.1; version=7.3.1.2; version=7.4.0; version=7.4.1; version=7.4.1.1

Published CVSS scores

6.1CiscoCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-80Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
T1203Exploitation for Client Execution

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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