CVE-2024-20262

Device denial of service via unvalidated CLI parameters

Published Mar 13, 2024 · Updated Aug 1, 2024

Improper input validation in Cisco IOS XR Software allows local users with valid credentials to overwrite system files through SCP or SFTP commands. The SCP and SFTP CLI handlers fail to validate specific command parameters before creating or overwriting files in a system directory. Exploitation requires IOS XR CLI access; the resulting device-functionality loss can require a manual reboot, while remote use requires administrative privileges.

CVSS severity6.5
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Cisco IOS XR Software allows local users with valid credentials to overwrite system files through SCP or SFTP commands. The SCP and SFTP CLI handlers fail to validate specific command parameters before creating or overwriting files in a system directory. Exploitation requires IOS XR CLI access; the resulting device-functionality loss can require a manual reboot, while remote use requires administrative privileges.

The record

CVE
CVE-2024-20262
Published
Mar 13, 2024
Updated
Aug 1, 2024
Vendor
ClamAV
Product
Cisco IOS XR Software
Classifications
CWE-269, T1485
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 13, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 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=5.2.0
  2. Affected versionversion=5.2.1
  3. Affected versionversion=5.2.2
  4. Affected versionversion=5.2.3
  5. Affected versionversion=5.2.4
  6. Affected versionversion=5.2.47
  7. Affected versionversion=5.2.5
  8. Affected versionversion=5.3.0
  9. Affected versionversion=5.3.1
  10. Affected versionversion=5.3.2
  11. Affected versionversion=5.3.3
  12. Affected versionversion=5.3.4
  13. Affected versionversion=6.0.0
  14. Affected versionversion=6.0.1
  15. Affected versionversion=6.0.2
  16. Affected versionversion=6.1.1
  17. Affected versionversion=6.1.12
  18. Affected versionversion=6.1.2
  19. Affected versionversion=6.1.22
  20. Affected versionversion=6.1.3
  21. Affected versionversion=6.1.32
  22. Affected versionversion=6.1.36
  23. Affected versionversion=6.1.4
  24. Affected versionversion=6.1.42
  25. Affected versionversion=6.2.1
  26. Affected versionversion=6.2.11
  27. Affected versionversion=6.2.2
  28. Affected versionversion=6.2.25
  29. Affected versionversion=6.2.3
  30. Affected versionversion=6.3.15
  31. Affected versionversion=6.3.2
  32. Affected versionversion=6.3.3
  33. Affected versionversion=6.4.1
  34. Affected versionversion=6.4.2
  35. Affected versionversion=6.4.3
  36. Affected versionversion=6.5.1
  37. Affected versionversion=6.5.2
  38. Affected versionversion=6.5.25
  39. Affected versionversion=6.5.26
  40. Affected versionversion=6.5.28
  41. Affected versionversion=6.5.29
  42. Affected versionversion=6.5.3
  43. Affected versionversion=6.5.32
  44. Affected versionversion=6.5.33
  45. Affected versionversion=6.6.2
  46. Affected versionversion=6.6.25
  47. Affected versionversion=6.6.3
  48. Affected versionversion=6.6.4
  49. Affected versionversion=6.7.2
  50. Affected versionversion=6.7.4
  51. Affected versionversion=7.0.1
  52. Affected versionversion=7.0.12
  53. Affected versionversion=7.0.14
  54. Affected versionversion=7.0.2
  55. Affected versionversion=7.10.1
  56. Affected versionversion=7.10.2
  57. Affected versionversion=7.1.1
  58. Affected versionversion=7.1.2
  59. Affected versionversion=7.2.0
  60. Affected versionversion=7.2.1
  61. Affected versionversion=7.2.2
  62. Affected versionversion=7.3.1
  63. Affected versionversion=7.3.15
  64. Affected versionversion=7.3.2
  65. Affected versionversion=7.3.3
  66. Affected versionversion=7.3.5
  67. Affected versionversion=7.4.1
  68. Affected versionversion=7.4.2
  69. Affected versionversion=7.5.1
  70. Affected versionversion=7.5.2
  71. Affected versionversion=7.5.3
  72. Affected versionversion=7.5.4
  73. Affected versionversion=7.5.5
  74. Affected versionversion=7.6.1
  75. Affected versionversion=7.6.2
  76. Affected versionversion=7.7.1
  77. Affected versionversion=7.7.2
  78. Affected versionversion=7.7.21
  79. Affected versionversion=7.8.1
  80. Affected versionversion=7.8.2
  81. Affected versionversion=7.9.1
  82. Affected versionversion=7.9.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

ClamAV · Cisco IOS XR Softwareversion=5.2.0; version=5.2.1; version=5.2.2; version=5.2.3; version=5.2.4; version=5.2.47; version=5.2.5; version=5.3.0; version=5.3.1; version=5.3.2; version=5.3.3; version=5.3.4; version=6.0.0; version=6.0.1; version=6.0.2; version=6.1.1; version=6.1.12; version=6.1.2; version=6.1.22; version=6.1.3; version=6.1.32; version=6.1.36; version=6.1.4; version=6.1.42; version=6.2.1; version=6.2.11; version=6.2.2; version=6.2.25; version=6.2.3; version=6.3.15; version=6.3.2; version=6.3.3; version=6.4.1; version=6.4.2; version=6.4.3; version=6.5.1; version=6.5.2; version=6.5.25; version=6.5.26; version=6.5.28; version=6.5.29; version=6.5.3; version=6.5.32; version=6.5.33; version=6.6.2; version=6.6.25; version=6.6.3; version=6.6.4; version=6.7.2; version=6.7.4; version=7.0.1; version=7.0.12; version=7.0.14; version=7.0.2; version=7.10.1; version=7.10.2; version=7.1.1; version=7.1.2; version=7.2.0; version=7.2.1; version=7.2.2; version=7.3.1; version=7.3.15; version=7.3.2; version=7.3.3; version=7.3.5; version=7.4.1; version=7.4.2; version=7.5.1; version=7.5.2; version=7.5.3; version=7.5.4; version=7.5.5; version=7.6.1; version=7.6.2; version=7.7.1; version=7.7.2; version=7.7.21; version=7.8.1; version=7.8.2; version=7.9.1; version=7.9.2

Published CVSS scores

6.5CiscoCVSS: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 exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
T1485Data Destruction

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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