CVE-2026-20114Known exploitationPublic exploitNetwork attack vector

Privilege escalation via unvalidated account creation parameters

Published Mar 25, 2026 · Updated Mar 25, 2026

Privilege escalation in the Lobby Ambassador web API of Cisco IOS XE Software allows remote authenticated users to create a level 1 account. The API passes crafted account-creation parameters into an internal command without sufficient validation, creating a MAC-based privilege level 1 user. A configured Lobby Ambassador account is required; the resulting credentials grant access to management APIs unavailable at privilege level 0.

CVSS severity5.4
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in the Lobby Ambassador web API of Cisco IOS XE Software allows remote authenticated users to create a level 1 account. The API passes crafted account-creation parameters into an internal command without sufficient validation, creating a MAC-based privilege level 1 user. A configured Lobby Ambassador account is required; the resulting credentials grant access to management APIs unavailable at privilege level 0.

The record

CVE
CVE-2026-20114
Published
Mar 25, 2026
Updated
Mar 25, 2026
Vendor
ClamAV
Product
Cisco IOS XE Software
Classifications
CWE-1286, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 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=16.11.1
  2. Affected versionversion=16.11.1a
  3. Affected versionversion=16.11.1b
  4. Affected versionversion=16.11.1s
  5. Affected versionversion=16.11.2
  6. Affected versionversion=16.12.1
  7. Affected versionversion=16.12.10
  8. Affected versionversion=16.12.10a
  9. Affected versionversion=16.12.11
  10. Affected versionversion=16.12.12
  11. Affected versionversion=16.12.13
  12. Affected versionversion=16.12.14
  13. Affected versionversion=16.12.1a
  14. Affected versionversion=16.12.1c
  15. Affected versionversion=16.12.1s
  16. Affected versionversion=16.12.1t
  17. Affected versionversion=16.12.1w
  18. Affected versionversion=16.12.1x
  19. Affected versionversion=16.12.1y
  20. Affected versionversion=16.12.1z1
  21. Affected versionversion=16.12.1z2
  22. Affected versionversion=16.12.2
  23. Affected versionversion=16.12.2a
  24. Affected versionversion=16.12.2s
  25. Affected versionversion=16.12.3
  26. Affected versionversion=16.12.3a
  27. Affected versionversion=16.12.3s
  28. Affected versionversion=16.12.4
  29. Affected versionversion=16.12.4a
  30. Affected versionversion=16.12.5
  31. Affected versionversion=16.12.5a
  32. Affected versionversion=16.12.5b
  33. Affected versionversion=16.12.6
  34. Affected versionversion=16.12.6a
  35. Affected versionversion=16.12.7
  36. Affected versionversion=16.12.8
  37. Affected versionversion=16.12.9
  38. Affected versionversion=17.10.1
  39. Affected versionversion=17.10.1a
  40. Affected versionversion=17.10.1b
  41. Affected versionversion=17.1.1
  42. Affected versionversion=17.11.1
  43. Affected versionversion=17.11.1a
  44. Affected versionversion=17.1.1a
  45. Affected versionversion=17.1.1s
  46. Affected versionversion=17.1.1t
  47. Affected versionversion=17.12.1
  48. Affected versionversion=17.12.1a
  49. Affected versionversion=17.12.1w
  50. Affected versionversion=17.12.1x
  51. Affected versionversion=17.12.1y
  52. Affected versionversion=17.12.1z
  53. Affected versionversion=17.12.1z1
  54. Affected versionversion=17.12.1z2
  55. Affected versionversion=17.12.1z3
  56. Affected versionversion=17.12.1z4
  57. Affected versionversion=17.12.2
  58. Affected versionversion=17.12.2a
  59. Affected versionversion=17.12.3
  60. Affected versionversion=17.12.3a
  61. Affected versionversion=17.12.4
  62. Affected versionversion=17.12.4a
  63. Affected versionversion=17.12.4b
  64. Affected versionversion=17.12.5
  65. Affected versionversion=17.12.5a
  66. Affected versionversion=17.12.5b
  67. Affected versionversion=17.12.5c
  68. Affected versionversion=17.12.5d
  69. Affected versionversion=17.1.3
  70. Affected versionversion=17.13.1
  71. Affected versionversion=17.13.1a
  72. Affected versionversion=17.14.1
  73. Affected versionversion=17.14.1a
  74. Affected versionversion=17.15.1
  75. Affected versionversion=17.15.1a
  76. Affected versionversion=17.15.1b
  77. Affected versionversion=17.15.1w
  78. Affected versionversion=17.15.1x
  79. Affected versionversion=17.15.1y
  80. Affected versionversion=17.15.1z
  81. Affected versionversion=17.15.2
  82. Affected versionversion=17.15.2a
  83. Affected versionversion=17.15.2b
  84. Affected versionversion=17.15.2c
  85. Affected versionversion=17.15.3
  86. Affected versionversion=17.15.3a
  87. Affected versionversion=17.15.3b
  88. Affected versionversion=17.15.4
  89. Affected versionversion=17.15.4d
  90. Affected versionversion=17.15.4e
  91. Affected versionversion=17.16.1
  92. Affected versionversion=17.16.1a
  93. Affected versionversion=17.17.1
  94. Affected versionversion=17.18.1
  95. Affected versionversion=17.18.1a
  96. Affected versionversion=17.18.1w
  97. Affected versionversion=17.2.1
  98. Affected versionversion=17.2.1a
  99. Affected versionversion=17.2.1r
  100. Affected versionversion=17.2.1v
  101. Affected versionversion=17.2.2
  102. Affected versionversion=17.2.3
  103. Affected versionversion=17.3.1
  104. Affected versionversion=17.3.1a
  105. Affected versionversion=17.3.1w
  106. Affected versionversion=17.3.1x
  107. Affected versionversion=17.3.1z
  108. Affected versionversion=17.3.2
  109. Affected versionversion=17.3.2a
  110. Affected versionversion=17.3.3
  111. Affected versionversion=17.3.4
  112. Affected versionversion=17.3.4a
  113. Affected versionversion=17.3.4b
  114. Affected versionversion=17.3.4c
  115. Affected versionversion=17.3.5
  116. Affected versionversion=17.3.5a
  117. Affected versionversion=17.3.5b
  118. Affected versionversion=17.3.6
  119. Affected versionversion=17.3.7
  120. Affected versionversion=17.3.8
  121. Affected versionversion=17.3.8a
  122. Affected versionversion=17.4.1
  123. Affected versionversion=17.4.1a
  124. Affected versionversion=17.4.1b
  125. Affected versionversion=17.4.2
  126. Affected versionversion=17.4.2a
  127. Affected versionversion=17.5.1
  128. Affected versionversion=17.5.1a
  129. Affected versionversion=17.6.1
  130. Affected versionversion=17.6.1a
  131. Affected versionversion=17.6.1w
  132. Affected versionversion=17.6.1x
  133. Affected versionversion=17.6.1y
  134. Affected versionversion=17.6.1z
  135. Affected versionversion=17.6.1z1
  136. Affected versionversion=17.6.2
  137. Affected versionversion=17.6.3
  138. Affected versionversion=17.6.3a
  139. Affected versionversion=17.6.4
  140. Affected versionversion=17.6.5
  141. Affected versionversion=17.6.5a
  142. Affected versionversion=17.6.6
  143. Affected versionversion=17.6.6a
  144. Affected versionversion=17.6.7
  145. Affected versionversion=17.6.8
  146. Affected versionversion=17.6.8a
  147. Affected versionversion=17.7.1
  148. Affected versionversion=17.7.1a
  149. Affected versionversion=17.7.1b
  150. Affected versionversion=17.7.2
  151. Affected versionversion=17.8.1
  152. Affected versionversion=17.8.1a
  153. Affected versionversion=17.9.1
  154. Affected versionversion=17.9.1a
  155. Affected versionversion=17.9.1w
  156. Affected versionversion=17.9.1x
  157. Affected versionversion=17.9.1x1
  158. Affected versionversion=17.9.1y
  159. Affected versionversion=17.9.1y1
  160. Affected versionversion=17.9.2
  161. Affected versionversion=17.9.2a
  162. Affected versionversion=17.9.3
  163. Affected versionversion=17.9.3a
  164. Affected versionversion=17.9.4
  165. Affected versionversion=17.9.4a
  166. Affected versionversion=17.9.5
  167. Affected versionversion=17.9.5a
  168. Affected versionversion=17.9.5b
  169. Affected versionversion=17.9.5e
  170. Affected versionversion=17.9.5f
  171. Affected versionversion=17.9.6
  172. Affected versionversion=17.9.6a
  173. Affected versionversion=17.9.7
  174. Affected versionversion=17.9.7a
  175. Affected versionversion=17.9.7b
  176. Affected versionversion=17.9.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ClamAV · Cisco IOS XE Softwareversion=16.11.1; version=16.11.1a; version=16.11.1b; version=16.11.1s; version=16.11.2; version=16.12.1; version=16.12.10; version=16.12.10a; version=16.12.11; version=16.12.12; version=16.12.13; version=16.12.14; version=16.12.1a; version=16.12.1c; version=16.12.1s; version=16.12.1t; version=16.12.1w; version=16.12.1x; version=16.12.1y; version=16.12.1z1; version=16.12.1z2; version=16.12.2; version=16.12.2a; version=16.12.2s; version=16.12.3; version=16.12.3a; version=16.12.3s; version=16.12.4; version=16.12.4a; version=16.12.5; version=16.12.5a; version=16.12.5b; version=16.12.6; version=16.12.6a; version=16.12.7; version=16.12.8; version=16.12.9; version=17.10.1; version=17.10.1a; version=17.10.1b; version=17.1.1; version=17.11.1; version=17.11.1a; version=17.1.1a; version=17.1.1s; version=17.1.1t; version=17.12.1; version=17.12.1a; version=17.12.1w; version=17.12.1x; version=17.12.1y; version=17.12.1z; version=17.12.1z1; version=17.12.1z2; version=17.12.1z3; version=17.12.1z4; version=17.12.2; version=17.12.2a; version=17.12.3; version=17.12.3a; version=17.12.4; version=17.12.4a; version=17.12.4b; version=17.12.5; version=17.12.5a; version=17.12.5b; version=17.12.5c; version=17.12.5d; version=17.1.3; version=17.13.1; version=17.13.1a; version=17.14.1; version=17.14.1a; version=17.15.1; version=17.15.1a; version=17.15.1b; version=17.15.1w; version=17.15.1x; version=17.15.1y; version=17.15.1z; version=17.15.2; version=17.15.2a; version=17.15.2b; version=17.15.2c; version=17.15.3; version=17.15.3a; version=17.15.3b; version=17.15.4; version=17.15.4d; version=17.15.4e; version=17.16.1; version=17.16.1a; version=17.17.1; version=17.18.1; version=17.18.1a; version=17.18.1w; version=17.2.1; version=17.2.1a; version=17.2.1r; version=17.2.1v; version=17.2.2; version=17.2.3; version=17.3.1; version=17.3.1a; version=17.3.1w; version=17.3.1x; version=17.3.1z; version=17.3.2; version=17.3.2a; version=17.3.3; version=17.3.4; version=17.3.4a; version=17.3.4b; version=17.3.4c; version=17.3.5; version=17.3.5a; version=17.3.5b; version=17.3.6; version=17.3.7; version=17.3.8; version=17.3.8a; version=17.4.1; version=17.4.1a; version=17.4.1b; version=17.4.2; version=17.4.2a; version=17.5.1; version=17.5.1a; version=17.6.1; version=17.6.1a; version=17.6.1w; version=17.6.1x; version=17.6.1y; version=17.6.1z; version=17.6.1z1; version=17.6.2; version=17.6.3; version=17.6.3a; version=17.6.4; version=17.6.5; version=17.6.5a; version=17.6.6; version=17.6.6a; version=17.6.7; version=17.6.8; version=17.6.8a; version=17.7.1; version=17.7.1a; version=17.7.1b; version=17.7.2; version=17.8.1; version=17.8.1a; version=17.9.1; version=17.9.1a; version=17.9.1w; version=17.9.1x; version=17.9.1x1; version=17.9.1y; version=17.9.1y1; version=17.9.2; version=17.9.2a; version=17.9.3; version=17.9.3a; version=17.9.4; version=17.9.4a; version=17.9.5; version=17.9.5a; version=17.9.5b; version=17.9.5e; version=17.9.5f; version=17.9.6; version=17.9.6a; version=17.9.7; version=17.9.7a; version=17.9.7b; version=17.9.8

Published CVSS scores

5.4Cisco Systems, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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
Privilegesauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-1286Improper Validation of Syntactic Correctness of Input
T1068Exploitation for Privilege Escalation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

See the directory against your own environment.

Your stack

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