CVE-2026-76458

Unspecified impact via exceptional-condition handling

Published Oct 7, 2026 · Updated Oct 7, 2026

Exceptional-condition handling in Cisco NX-OS Software, ACI-mode NX-OS, and managed UCS allows attackers unspecified impact via unspecified vectors. Cisco identifies uncaught exceptions and reachable assertions within this grouped weakness class but does not disclose the affected code paths or triggering inputs. The issues affect listed switch and fabric-interconnect releases regardless of device configuration; attacker privileges and concrete effects are not published.

CVSS severityUnavailable
Unscored
EPSS probability0.28%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Exceptional-condition handling in Cisco NX-OS Software, ACI-mode NX-OS, and managed UCS allows attackers unspecified impact via unspecified vectors. Cisco identifies uncaught exceptions and reachable assertions within this grouped weakness class but does not disclose the affected code paths or triggering inputs. The issues affect listed switch and fabric-interconnect releases regardless of device configuration; attacker privileges and concrete effects are not published.

The record

CVE
CVE-2026-76458
Published
Oct 7, 2026
Updated
Oct 7, 2026
Vendor
Clam AntiVirus
Product
Cisco Unified Computing System (Managed)
Classifications
CWE-703
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 7, 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=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=4.2(3p)
  70. Affected versionversion=4.2(3r)
  71. Affected versionversion=4.2(3s)
  72. Affected versionversion=4.3(2b)
  73. Affected versionversion=4.3(2c)
  74. Affected versionversion=4.3(2e)
  75. Affected versionversion=4.3(2f)
  76. Affected versionversion=4.3(3a)
  77. Affected versionversion=4.3(3c)
  78. Affected versionversion=4.3(4a)
  79. Affected versionversion=4.3(4b)
  80. Affected versionversion=4.3(4c)
  81. Affected versionversion=4.3(4d)
  82. Affected versionversion=4.3(4e)
  83. Affected versionversion=4.3(4f)
  84. Affected versionversion=4.3(5a)
  85. Affected versionversion=4.3(5c)
  86. Affected versionversion=4.3(5d)
  87. Affected versionversion=4.3(5e)
  88. Affected versionversion=4.3(6a)
  89. Affected versionversion=4.3(6b)
  90. Affected versionversion=4.3(6c)
  91. Affected versionversion=4.3(6d)
  92. Affected versionversion=4.3(6e)
  93. Affected versionversion=4.3(6f)
  94. Affected versionversion=4.3(6g)
  95. Affected versionversion=4.3(6h)
  96. Affected versionversion=4.3(6i)
  97. Affected versionversion=6.0(1b)
  98. Affected versionversion=6.0(1c)
  99. Affected versionversion=6.0(1d)
  100. Affected versionversion=6.0(1e)
  101. Affected versionversion=6.0(1f)
  102. Affected versionversion=6.0(1h)
  103. Affected versionversion=6.0(2b)
  104. Affected versionversion=6.0(2c)
  105. Affected versionversion=6.0(2d)

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Clam AntiVirus · 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=4.2(3p); version=4.2(3r); version=4.2(3s); 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); version=4.3(6c); version=4.3(6d); version=4.3(6e); version=4.3(6f); version=4.3(6g); version=4.3(6h); version=4.3(6i); version=6.0(1b); version=6.0(1c); version=6.0(1d); version=6.0(1e); version=6.0(1f); version=6.0(1h); version=6.0(2b); version=6.0(2c); version=6.0(2d)
Clam AntiVirus · Cisco NX-OS Softwareversion=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(8); version=10.3(9); 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=10.4(6); version=10.4(7); version=10.5(1); version=10.5(1j); version=10.5(2); version=10.5(3); version=10.5(3e); version=10.5(3o); version=10.5(3p); version=10.5(3s); version=10.5(3t); version=10.5(4); version=10.5(5); version=10.6(1); version=10.6(1s); version=10.6(2); version=10.6(2n); version=10.6(2s); version=10.6(3); version=10.6(3o); version=10.6(3q); version=10.6(3s); version=7.3(0)D1(1); version=7.3(0)DX(1); version=7.3(0)DY(1); version=7.3(1)D1(1); version=7.3(1)DY(1); version=7.3(2)D1(1); version=7.3(2)D1(1d); version=7.3(2)D1(2); version=7.3(2)D1(3); version=7.3(2)D1(3a); version=7.3(3)D1(1); version=7.3(4)D1(1); version=7.3(5)D1(1); version=7.3(6)D1(1); version=7.3(7)D1(1); version=7.3(8)D1(1); version=7.3(9)D1(1); version=8.1(1); version=8.1(1a); version=8.1(1b); version=8.1(2); version=8.1(2a); version=8.2(1); version=8.2(10); version=8.2(11); version=8.2(2); version=8.2(3); version=8.2(4); version=8.2(5); version=8.2(6); version=8.2(7); version=8.2(7a); version=8.2(8); version=8.2(9); version=8.3(1); version=8.3(2); version=8.4(1); version=8.4(10); version=8.4(11); version=8.4(12); version=8.4(13); version=8.4(1a); version=8.4(2); version=8.4(2a); version=8.4(2b); version=8.4(2c); version=8.4(2d); version=8.4(2e); version=8.4(2f); version=8.4(3); version=8.4(4); version=8.4(4a); version=8.4(5); version=8.4(6); version=8.4(6a); version=8.4(7); version=8.4(8); version=8.4(9); version=8.5(1); version=9.2(1); version=9.2(1a); 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(16); version=9.3(17); version=9.3(1z); version=9.3(2); version=9.3(2a); 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); version=9.4(1); version=9.4(1a); version=9.4(2); version=9.4(2a); version=9.4(3); version=9.4(3a); version=9.4(3b); version=9.4(4); version=9.4(5)
Clam AntiVirus · Cisco NX-OS System Software in ACI Modeversion=15.2(1g); version=15.2(2e); version=15.2(2f); version=15.2(2g); version=15.2(2h); version=15.2(3e); version=15.2(3f); version=15.2(3g); version=15.2(4d); version=15.2(4e); version=15.2(4f); version=15.2(5c); version=15.2(5d); version=15.2(5e); version=15.2(6e); version=15.2(6g); version=15.2(6h); version=15.2(7f); version=15.2(7g); version=15.2(8d); version=15.2(8e); version=15.2(8f); version=15.2(8g); version=15.2(8h); version=15.2(8i); version=15.3(1d); version=15.3(2a); version=15.3(2b); version=15.3(2c); version=15.3(2d); version=15.3(2e); version=15.3(2f); version=16.0(1g); version=16.0(1j); version=16.0(2h); version=16.0(2j); version=16.0(3d); version=16.0(3e); version=16.0(3g); version=16.0(4c); version=16.0(5h); version=16.0(5j); version=16.0(6c); version=16.0(6h); version=16.0(7e); version=16.0(8e); version=16.0(8f); version=16.0(8h); version=16.0(9c); version=16.0(9d); version=16.0(9e); version=16.0(9f); version=16.1(1f); version=16.1(2f); version=16.1(2g); version=16.1(3f); version=16.1(3g); version=16.1(4h); version=16.1(5e); version=16.2(1g); version=16.2(2e)

Published CVSS scores

No CVSS assessment is available in this record.

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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-703Improper Check or Handling of Exceptional Conditions

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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