CVE-2021-1234Network attack vector

Sensitive information disclosure via unauthenticated cluster interface

Published Nov 18, 2024 · Updated Nov 18, 2024

Information disclosure in Cisco Catalyst SD-WAN Manager allows remote attackers to read sensitive system information through its cluster interface. The cluster management interface serves sensitive information from crafted requests without first authenticating the requester. Exposure requires cluster mode and is limited to reading sensitive system information, with no reported integrity or availability impact.

CVSS severity5.3
Medium
EPSS probability0.78%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Cisco Catalyst SD-WAN Manager allows remote attackers to read sensitive system information through its cluster interface. The cluster management interface serves sensitive information from crafted requests without first authenticating the requester. Exposure requires cluster mode and is limited to reading sensitive system information, with no reported integrity or availability impact.

The record

CVE
CVE-2021-1234
Published
Nov 18, 2024
Updated
Nov 18, 2024
Vendor
ClamAV
Product
Cisco Catalyst SD-WAN Manager
Classifications
CWE-497
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 18, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 18, 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=17.2.10
  2. Affected versionversion=17.2.4
  3. Affected versionversion=17.2.5
  4. Affected versionversion=17.2.6
  5. Affected versionversion=17.2.7
  6. Affected versionversion=17.2.8
  7. Affected versionversion=17.2.9
  8. Affected versionversion=18.2.0
  9. Affected versionversion=18.3.0
  10. Affected versionversion=18.3.1
  11. Affected versionversion=18.3.1.1
  12. Affected versionversion=18.3.3
  13. Affected versionversion=18.3.3.1
  14. Affected versionversion=18.3.4
  15. Affected versionversion=18.3.5
  16. Affected versionversion=18.3.6
  17. Affected versionversion=18.3.6.1
  18. Affected versionversion=18.3.7
  19. Affected versionversion=18.3.8
  20. Affected versionversion=18.4.0
  21. Affected versionversion=18.4.0.1
  22. Affected versionversion=18.4.1
  23. Affected versionversion=18.4.3
  24. Affected versionversion=18.4.302
  25. Affected versionversion=18.4.303
  26. Affected versionversion=18.4.4
  27. Affected versionversion=18.4.5
  28. Affected versionversion=18.4.501_es
  29. Affected versionversion=18.4.501_ES
  30. Affected versionversion=18.4.6
  31. Affected versionversion=19.0.0
  32. Affected versionversion=19.0.1a
  33. Affected versionversion=19.1.0
  34. Affected versionversion=19.2.0
  35. Affected versionversion=19.2.097
  36. Affected versionversion=19.2.098
  37. Affected versionversion=19.2.099
  38. Affected versionversion=19.2.1
  39. Affected versionversion=19.2.2
  40. Affected versionversion=19.2.3
  41. Affected versionversion=19.2.31
  42. Affected versionversion=19.2.32
  43. Affected versionversion=19.2.929
  44. Affected versionversion=19.3.0
  45. Affected versionversion=20.1.1
  46. Affected versionversion=20.1.1.1
  47. Affected versionversion=20.1.12
  48. Affected versionversion=20.1.2
  49. Affected versionversion=20.1.2_937

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ClamAV · Cisco Catalyst SD-WAN Managerversion=17.2.10; version=17.2.4; version=17.2.5; version=17.2.6; version=17.2.7; version=17.2.8; version=17.2.9; version=18.2.0; version=18.3.0; version=18.3.1; version=18.3.1.1; version=18.3.3; version=18.3.3.1; version=18.3.4; version=18.3.5; version=18.3.6; version=18.3.6.1; version=18.3.7; version=18.3.8; version=18.4.0; version=18.4.0.1; version=18.4.1; version=18.4.3; version=18.4.302; version=18.4.303; version=18.4.4; version=18.4.5; version=18.4.501_es; version=18.4.501_ES; version=18.4.6; version=19.0.0; version=19.0.1a; version=19.1.0; version=19.2.0; version=19.2.097; version=19.2.098; version=19.2.099; version=19.2.1; version=19.2.2; version=19.2.3; version=19.2.31; version=19.2.32; version=19.2.929; version=19.3.0; version=20.1.1; version=20.1.1.1; version=20.1.12; version=20.1.2; version=20.1.2_937

Published CVSS scores

5.3Cisco Systems, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-497Exposure of Sensitive System Information to an Unauthorized Control Sphere

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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