CVE-2025-20290

Credential disclosure via sensitive log entries

Published Aug 27, 2025 · Updated Aug 27, 2025

Information disclosure in Cisco NX-OS Software on affected Nexus and UCS devices allows local users to read credentials from logs. The logging feature writes sensitive information, including stored credentials, into log files on the device file system. Exploitation requires authenticated file-system access on Nexus devices; on UCS fabric interconnects, an administrator must generate and download a tech-support file because the logs are unavailable directly through the CLI or UI.

CVSS severity5.5
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Information disclosure in Cisco NX-OS Software on affected Nexus and UCS devices allows local users to read credentials from logs. The logging feature writes sensitive information, including stored credentials, into log files on the device file system. Exploitation requires authenticated file-system access on Nexus devices; on UCS fabric interconnects, an administrator must generate and download a tech-support file because the logs are unavailable directly through the CLI or UI.

The record

CVE
CVE-2025-20290
Published
Aug 27, 2025
Updated
Aug 27, 2025
Vendor
ClamAV
Product
Cisco Unified Computing System (Managed)
Classifications
CWE-200, T1552.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 27, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 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=4.0(1a)
  2. Affected versionversion=4.0(1b)
  3. Affected versionversion=4.0(1c)
  4. Affected versionversion=4.0(1d)
  5. Affected versionversion=4.0(2a)
  6. Affected versionversion=4.0(2b)
  7. Affected versionversion=4.0(2d)
  8. Affected versionversion=4.0(2e)
  9. Affected versionversion=4.0(4a)
  10. Affected versionversion=4.0(4b)
  11. Affected versionversion=4.0(4c)
  12. Affected versionversion=4.0(4d)
  13. Affected versionversion=4.0(4e)
  14. Affected versionversion=4.0(4f)
  15. Affected versionversion=4.0(4g)
  16. Affected versionversion=4.0(4h)
  17. Affected versionversion=4.0(4i)
  18. Affected versionversion=4.0(4k)
  19. Affected versionversion=4.0(4l)
  20. Affected versionversion=4.0(4m)
  21. Affected versionversion=4.0(4n)
  22. Affected versionversion=4.0(4o)
  23. Affected versionversion=4.1(1a)
  24. Affected versionversion=4.1(1b)
  25. Affected versionversion=4.1(1c)
  26. Affected versionversion=4.1(1d)
  27. Affected versionversion=4.1(1e)
  28. Affected versionversion=4.1(2a)
  29. Affected versionversion=4.1(2b)
  30. Affected versionversion=4.1(2c)
  31. Affected versionversion=4.1(3a)
  32. Affected versionversion=4.1(3b)
  33. Affected versionversion=4.1(3c)
  34. Affected versionversion=4.1(3d)
  35. Affected versionversion=4.1(3e)
  36. Affected versionversion=4.1(3f)
  37. Affected versionversion=4.1(3h)
  38. Affected versionversion=4.1(3i)
  39. Affected versionversion=4.1(3j)
  40. Affected versionversion=4.1(3k)
  41. Affected versionversion=4.1(3l)
  42. Affected versionversion=4.1(3m)
  43. Affected versionversion=4.1(3n)
  44. Affected versionversion=4.1(4a)
  45. Affected versionversion=4.2(1c)
  46. Affected versionversion=4.2(1d)
  47. Affected versionversion=4.2(1f)
  48. Affected versionversion=4.2(1i)
  49. Affected versionversion=4.2(1k)
  50. Affected versionversion=4.2(1l)
  51. Affected versionversion=4.2(1m)
  52. Affected versionversion=4.2(1n)
  53. Affected versionversion=4.2(2a)
  54. Affected versionversion=4.2(2c)
  55. Affected versionversion=4.2(2d)
  56. Affected versionversion=4.2(2e)
  57. Affected versionversion=4.2(3b)
  58. Affected versionversion=4.2(3d)
  59. Affected versionversion=4.2(3e)
  60. Affected versionversion=4.2(3g)
  61. Affected versionversion=4.2(3h)
  62. Affected versionversion=4.2(3i)
  63. Affected versionversion=4.2(3j)
  64. Affected versionversion=4.2(3k)
  65. Affected versionversion=4.2(3l)
  66. Affected versionversion=4.2(3m)
  67. Affected versionversion=4.2(3n)
  68. Affected versionversion=4.2(3o)
  69. Affected versionversion=4.3(2b)
  70. Affected versionversion=4.3(2c)
  71. Affected versionversion=4.3(2e)
  72. Affected versionversion=4.3(2f)
  73. Affected versionversion=4.3(3a)
  74. Affected versionversion=4.3(3c)
  75. Affected versionversion=4.3(4a)
  76. Affected versionversion=4.3(4b)
  77. Affected versionversion=4.3(4c)
  78. Affected versionversion=4.3(4d)
  79. Affected versionversion=4.3(4e)
  80. Affected versionversion=4.3(4f)
  81. Affected versionversion=4.3(5a)
  82. Affected versionversion=4.3(5c)
  83. Affected versionversion=4.3(5d)
  84. Affected versionversion=4.3(5e)
  85. Affected versionversion=4.3(6a)
  86. Affected versionversion=4.3(6b)

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

ClamAV · Cisco Unified Computing System (Managed)version=4.0(1a); version=4.0(1b); version=4.0(1c); version=4.0(1d); version=4.0(2a); version=4.0(2b); version=4.0(2d); version=4.0(2e); version=4.0(4a); version=4.0(4b); version=4.0(4c); version=4.0(4d); version=4.0(4e); version=4.0(4f); version=4.0(4g); version=4.0(4h); version=4.0(4i); version=4.0(4k); version=4.0(4l); version=4.0(4m); version=4.0(4n); version=4.0(4o); version=4.1(1a); version=4.1(1b); version=4.1(1c); version=4.1(1d); version=4.1(1e); version=4.1(2a); version=4.1(2b); version=4.1(2c); version=4.1(3a); version=4.1(3b); version=4.1(3c); version=4.1(3d); version=4.1(3e); version=4.1(3f); version=4.1(3h); version=4.1(3i); version=4.1(3j); version=4.1(3k); version=4.1(3l); version=4.1(3m); version=4.1(3n); version=4.1(4a); version=4.2(1c); version=4.2(1d); version=4.2(1f); version=4.2(1i); version=4.2(1k); version=4.2(1l); version=4.2(1m); version=4.2(1n); version=4.2(2a); version=4.2(2c); version=4.2(2d); version=4.2(2e); version=4.2(3b); version=4.2(3d); version=4.2(3e); version=4.2(3g); version=4.2(3h); version=4.2(3i); version=4.2(3j); version=4.2(3k); version=4.2(3l); version=4.2(3m); version=4.2(3n); version=4.2(3o); version=4.3(2b); version=4.3(2c); version=4.3(2e); version=4.3(2f); version=4.3(3a); version=4.3(3c); version=4.3(4a); version=4.3(4b); version=4.3(4c); version=4.3(4d); version=4.3(4e); version=4.3(4f); version=4.3(5a); version=4.3(5c); version=4.3(5d); version=4.3(5e); version=4.3(6a); version=4.3(6b)
ClamAV · Cisco NX-OS Softwareversion=10.1(1); version=10.1(2); version=10.1(2t); version=10.2(1); version=10.2(1q); version=10.2(2); version=10.2(2a); version=10.2(3); version=10.2(3t); version=10.2(3v); version=10.2(4); version=10.2(5); version=10.2(6); version=10.2(7); version=10.2(8); version=10.2(9); version=10.3(1); version=10.3(2); version=10.3(3); version=10.3(3o); version=10.3(3p); version=10.3(3q); version=10.3(3r); version=10.3(3w); version=10.3(3x); version=10.3(4); version=10.3(4a); version=10.3(4g); version=10.3(4h); version=10.3(5); version=10.3(6); version=10.3(7); version=10.3(99w); version=10.3(99x); version=10.4(1); version=10.4(2); version=10.4(3); version=10.4(4); version=10.4(4g); version=10.4(5); version=10.5(1); version=10.5(2); version=10.5(3); version=10.5(3e); version=10.5(3o); version=10.5(3t); version=7.0(3)F3(1); version=7.0(3)F3(2); version=7.0(3)F3(3); version=7.0(3)F3(3a); version=7.0(3)F3(3c); version=7.0(3)F3(4); version=7.0(3)F3(5); version=7.0(3)I4(4); version=7.0(3)I4(5); version=7.0(3)I4(6); version=7.0(3)I4(6t); version=7.0(3)I4(7); version=7.0(3)I4(8); version=7.0(3)I4(8a); version=7.0(3)I4(8b); version=7.0(3)I4(8z); version=7.0(3)I4(9); version=7.0(3)I5(1); version=7.0(3)I5(2); version=7.0(3)I5(3); version=7.0(3)I5(3a); version=7.0(3)I5(3b); version=7.0(3)I6(1); version=7.0(3)I6(2); version=7.0(3)I7(1); version=7.0(3)I7(10); version=7.0(3)I7(2); version=7.0(3)I7(3); version=7.0(3)I7(3z); version=7.0(3)I7(4); version=7.0(3)I7(5); version=7.0(3)I7(5a); version=7.0(3)I7(6); version=7.0(3)I7(6z); version=7.0(3)I7(7); version=7.0(3)I7(8); version=7.0(3)I7(9); version=7.0(3)I7(9w); version=7.0(3)IA7(1); version=7.0(3)IA7(2); version=7.0(3)IM7(2); version=9.2(1); version=9.2(2); version=9.2(2t); version=9.2(2v); version=9.2(3); version=9.2(3y); version=9.2(4); version=9.3(1); version=9.3(10); version=9.3(11); version=9.3(12); version=9.3(13); version=9.3(14); version=9.3(15); version=9.3(1z); version=9.3(2); version=9.3(3); version=9.3(4); version=9.3(5); version=9.3(5w); version=9.3(6); version=9.3(7); version=9.3(7a); version=9.3(7k); version=9.3(8); version=9.3(9)

Published CVSS scores

5.5Cisco Systems, Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1552.001Unsecured Credentials: Credentials In Files

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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