CVE-2026-20110Known exploitationPublic exploit

Service interruption via low-privilege maintenance command

Published Mar 25, 2026 · Updated Mar 25, 2026

Incorrect privilege assignment in Cisco IOS XE Software allows local users to shut down device interfaces through the management CLI. The start maintenance command is assigned insufficient privileges, so a low-privileged CLI account can place the device in maintenance mode and shut down its interfaces. Access requires an authenticated local management session; the standalone result is a reversible service interruption rather than data disclosure or modification.

CVSS severity6.5
Medium
EPSS probability0.09%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect privilege assignment in Cisco IOS XE Software allows local users to shut down device interfaces through the management CLI. The start maintenance command is assigned insufficient privileges, so a low-privileged CLI account can place the device in maintenance mode and shut down its interfaces. Access requires an authenticated local management session; the standalone result is a reversible service interruption rather than data disclosure or modification.

The record

CVE
CVE-2026-20110
Published
Mar 25, 2026
Updated
Mar 25, 2026
Vendor
ClamAV
Product
Cisco IOS XE Software
Classifications
CWE-266, T1489
Attack vector
local
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=16.10.1
  2. Affected versionversion=16.10.1a
  3. Affected versionversion=16.10.1b
  4. Affected versionversion=16.10.1c
  5. Affected versionversion=16.10.1d
  6. Affected versionversion=16.10.1e
  7. Affected versionversion=16.10.1f
  8. Affected versionversion=16.10.1g
  9. Affected versionversion=16.10.1s
  10. Affected versionversion=16.10.2
  11. Affected versionversion=16.10.3
  12. Affected versionversion=16.11.1
  13. Affected versionversion=16.11.1a
  14. Affected versionversion=16.11.1b
  15. Affected versionversion=16.11.1s
  16. Affected versionversion=16.11.2
  17. Affected versionversion=16.12.1
  18. Affected versionversion=16.12.10
  19. Affected versionversion=16.12.10a
  20. Affected versionversion=16.12.11
  21. Affected versionversion=16.12.12
  22. Affected versionversion=16.12.13
  23. Affected versionversion=16.12.14
  24. Affected versionversion=16.12.1a
  25. Affected versionversion=16.12.1c
  26. Affected versionversion=16.12.1s
  27. Affected versionversion=16.12.1t
  28. Affected versionversion=16.12.1w
  29. Affected versionversion=16.12.1x
  30. Affected versionversion=16.12.1y
  31. Affected versionversion=16.12.1z1
  32. Affected versionversion=16.12.1z2
  33. Affected versionversion=16.12.2
  34. Affected versionversion=16.12.2a
  35. Affected versionversion=16.12.2s
  36. Affected versionversion=16.12.3
  37. Affected versionversion=16.12.3a
  38. Affected versionversion=16.12.3s
  39. Affected versionversion=16.12.4
  40. Affected versionversion=16.12.4a
  41. Affected versionversion=16.12.5
  42. Affected versionversion=16.12.5a
  43. Affected versionversion=16.12.5b
  44. Affected versionversion=16.12.6
  45. Affected versionversion=16.12.6a
  46. Affected versionversion=16.12.7
  47. Affected versionversion=16.12.8
  48. Affected versionversion=16.12.9
  49. Affected versionversion=16.6.1
  50. Affected versionversion=16.6.10
  51. Affected versionversion=16.6.2
  52. Affected versionversion=16.6.3
  53. Affected versionversion=16.6.4
  54. Affected versionversion=16.6.4a
  55. Affected versionversion=16.6.5
  56. Affected versionversion=16.6.5a
  57. Affected versionversion=16.6.6
  58. Affected versionversion=16.6.7
  59. Affected versionversion=16.6.8
  60. Affected versionversion=16.6.9
  61. Affected versionversion=16.7.1
  62. Affected versionversion=16.7.1a
  63. Affected versionversion=16.7.1b
  64. Affected versionversion=16.7.2
  65. Affected versionversion=16.7.3
  66. Affected versionversion=16.7.4
  67. Affected versionversion=16.8.1
  68. Affected versionversion=16.8.1a
  69. Affected versionversion=16.8.1b
  70. Affected versionversion=16.8.1c
  71. Affected versionversion=16.8.1d
  72. Affected versionversion=16.8.1e
  73. Affected versionversion=16.8.1s
  74. Affected versionversion=16.8.2
  75. Affected versionversion=16.8.3
  76. Affected versionversion=16.9.1
  77. Affected versionversion=16.9.1a
  78. Affected versionversion=16.9.1b
  79. Affected versionversion=16.9.1s
  80. Affected versionversion=16.9.2
  81. Affected versionversion=16.9.3
  82. Affected versionversion=16.9.3a
  83. Affected versionversion=16.9.4
  84. Affected versionversion=16.9.5
  85. Affected versionversion=16.9.5f
  86. Affected versionversion=16.9.6
  87. Affected versionversion=16.9.7
  88. Affected versionversion=16.9.8
  89. Affected versionversion=17.10.1
  90. Affected versionversion=17.10.1a
  91. Affected versionversion=17.10.1b
  92. Affected versionversion=17.1.1
  93. Affected versionversion=17.11.1
  94. Affected versionversion=17.11.1a
  95. Affected versionversion=17.1.1a
  96. Affected versionversion=17.1.1s
  97. Affected versionversion=17.1.1t
  98. Affected versionversion=17.12.1
  99. Affected versionversion=17.12.1a
  100. Affected versionversion=17.12.1w
  101. Affected versionversion=17.12.1x
  102. Affected versionversion=17.12.1y
  103. Affected versionversion=17.12.1z
  104. Affected versionversion=17.12.1z1
  105. Affected versionversion=17.12.1z2
  106. Affected versionversion=17.12.1z3
  107. Affected versionversion=17.12.1z4
  108. Affected versionversion=17.12.2
  109. Affected versionversion=17.12.2a
  110. Affected versionversion=17.12.3
  111. Affected versionversion=17.12.3a
  112. Affected versionversion=17.12.4
  113. Affected versionversion=17.12.4a
  114. Affected versionversion=17.12.4b
  115. Affected versionversion=17.12.5
  116. Affected versionversion=17.12.5a
  117. Affected versionversion=17.12.5b
  118. Affected versionversion=17.12.5c
  119. Affected versionversion=17.12.5d
  120. Affected versionversion=17.12.6
  121. Affected versionversion=17.12.6a
  122. Affected versionversion=17.12.6b
  123. Affected versionversion=17.1.3
  124. Affected versionversion=17.13.1
  125. Affected versionversion=17.13.1a
  126. Affected versionversion=17.14.1
  127. Affected versionversion=17.14.1a
  128. Affected versionversion=17.15.1
  129. Affected versionversion=17.15.1a
  130. Affected versionversion=17.15.1b
  131. Affected versionversion=17.15.1w
  132. Affected versionversion=17.15.1x
  133. Affected versionversion=17.15.1y
  134. Affected versionversion=17.15.1z
  135. Affected versionversion=17.15.2
  136. Affected versionversion=17.15.2a
  137. Affected versionversion=17.15.2b
  138. Affected versionversion=17.15.2c
  139. Affected versionversion=17.15.3
  140. Affected versionversion=17.15.3a
  141. Affected versionversion=17.15.3b
  142. Affected versionversion=17.15.4
  143. Affected versionversion=17.15.4d
  144. Affected versionversion=17.15.4e
  145. Affected versionversion=17.16.1
  146. Affected versionversion=17.16.1a
  147. Affected versionversion=17.17.1
  148. Affected versionversion=17.18.1
  149. Affected versionversion=17.18.1a
  150. Affected versionversion=17.18.1w
  151. Affected versionversion=17.2.1
  152. Affected versionversion=17.2.1a
  153. Affected versionversion=17.2.1r
  154. Affected versionversion=17.2.1v
  155. Affected versionversion=17.2.2
  156. Affected versionversion=17.2.3
  157. Affected versionversion=17.3.1
  158. Affected versionversion=17.3.1a
  159. Affected versionversion=17.3.1w
  160. Affected versionversion=17.3.1x
  161. Affected versionversion=17.3.1z
  162. Affected versionversion=17.3.2
  163. Affected versionversion=17.3.2a
  164. Affected versionversion=17.3.3
  165. Affected versionversion=17.3.4
  166. Affected versionversion=17.3.4a
  167. Affected versionversion=17.3.4b
  168. Affected versionversion=17.3.4c
  169. Affected versionversion=17.3.5
  170. Affected versionversion=17.3.5a
  171. Affected versionversion=17.3.5b
  172. Affected versionversion=17.3.6
  173. Affected versionversion=17.3.7
  174. Affected versionversion=17.3.8
  175. Affected versionversion=17.3.8a
  176. Affected versionversion=17.4.1
  177. Affected versionversion=17.4.1a
  178. Affected versionversion=17.4.1b
  179. Affected versionversion=17.4.2
  180. Affected versionversion=17.4.2a
  181. Affected versionversion=17.5.1
  182. Affected versionversion=17.5.1a
  183. Affected versionversion=17.6.1
  184. Affected versionversion=17.6.1a
  185. Affected versionversion=17.6.1w
  186. Affected versionversion=17.6.1x
  187. Affected versionversion=17.6.1y
  188. Affected versionversion=17.6.1z
  189. Affected versionversion=17.6.1z1
  190. Affected versionversion=17.6.2
  191. Affected versionversion=17.6.3
  192. Affected versionversion=17.6.3a
  193. Affected versionversion=17.6.4
  194. Affected versionversion=17.6.5
  195. Affected versionversion=17.6.5a
  196. Affected versionversion=17.6.6
  197. Affected versionversion=17.6.6a
  198. Affected versionversion=17.6.7
  199. Affected versionversion=17.6.8
  200. Affected versionversion=17.6.8a
  201. Affected versionversion=17.7.1
  202. Affected versionversion=17.7.1a
  203. Affected versionversion=17.7.1b
  204. Affected versionversion=17.7.2
  205. Affected versionversion=17.8.1
  206. Affected versionversion=17.8.1a
  207. Affected versionversion=17.9.1
  208. Affected versionversion=17.9.1a
  209. Affected versionversion=17.9.1w
  210. Affected versionversion=17.9.1x
  211. Affected versionversion=17.9.1x1
  212. Affected versionversion=17.9.1y
  213. Affected versionversion=17.9.1y1
  214. Affected versionversion=17.9.2
  215. Affected versionversion=17.9.2a
  216. Affected versionversion=17.9.3
  217. Affected versionversion=17.9.3a
  218. Affected versionversion=17.9.4
  219. Affected versionversion=17.9.4a
  220. Affected versionversion=17.9.5
  221. Affected versionversion=17.9.5a
  222. Affected versionversion=17.9.5b
  223. Affected versionversion=17.9.5e
  224. Affected versionversion=17.9.5f
  225. Affected versionversion=17.9.6
  226. Affected versionversion=17.9.6a
  227. Affected versionversion=17.9.7
  228. Affected versionversion=17.9.7a
  229. Affected versionversion=17.9.7b
  230. Affected versionversion=17.9.8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

ClamAV · Cisco IOS XE Softwareversion=16.10.1; version=16.10.1a; version=16.10.1b; version=16.10.1c; version=16.10.1d; version=16.10.1e; version=16.10.1f; version=16.10.1g; version=16.10.1s; version=16.10.2; version=16.10.3; version=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=16.6.1; version=16.6.10; version=16.6.2; version=16.6.3; version=16.6.4; version=16.6.4a; version=16.6.5; version=16.6.5a; version=16.6.6; version=16.6.7; version=16.6.8; version=16.6.9; version=16.7.1; version=16.7.1a; version=16.7.1b; version=16.7.2; version=16.7.3; version=16.7.4; version=16.8.1; version=16.8.1a; version=16.8.1b; version=16.8.1c; version=16.8.1d; version=16.8.1e; version=16.8.1s; version=16.8.2; version=16.8.3; version=16.9.1; version=16.9.1a; version=16.9.1b; version=16.9.1s; version=16.9.2; version=16.9.3; version=16.9.3a; version=16.9.4; version=16.9.5; version=16.9.5f; version=16.9.6; version=16.9.7; version=16.9.8; 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=17.12.6; version=17.12.6a; version=17.12.6b; 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

6.5Cisco Systems, Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-266Incorrect Privilege Assignment
T1489Service Stop

Public exploit references

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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