CVE-2024-20367Network attack vector

Authenticated script execution via unvalidated crafted link

Published Apr 3, 2024 · Updated Aug 1, 2024

Cross-site scripting in Cisco Enterprise Chat and Email's web UI allows remote authenticated users to execute browser script via a crafted link. The web UI places user-supplied input into generated content without proper validation, causing the link's payload to run in the affected interface. Valid agent credentials and a user who clicks the link are required; exploitation exposes browser-based information and permits actions in that user's interface context.

CVSS severity5.4
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Cisco Enterprise Chat and Email's web UI allows remote authenticated users to execute browser script via a crafted link. The web UI places user-supplied input into generated content without proper validation, causing the link's payload to run in the affected interface. Valid agent credentials and a user who clicks the link are required; exploitation exposes browser-based information and permits actions in that user's interface context.

The record

CVE
CVE-2024-20367
Published
Apr 3, 2024
Updated
Aug 1, 2024
Vendor
ClamAV
Product
Cisco Enterprise Chat and Email
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 3, 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=11.5(1)
  2. Affected versionversion=11.6(1)
  3. Affected versionversion=11.6(1)_ES10
  4. Affected versionversion=11.6(1)_ES11
  5. Affected versionversion=11.6(1)_ES12
  6. Affected versionversion=11.6(1)_ES2
  7. Affected versionversion=11.6(1)_ES3
  8. Affected versionversion=11.6(1)_ES4
  9. Affected versionversion=11.6(1)_ES5
  10. Affected versionversion=11.6(1)_ES6
  11. Affected versionversion=11.6(1)_ES7
  12. Affected versionversion=11.6(1)_ES8
  13. Affected versionversion=11.6(1)_ES9
  14. Affected versionversion=11.6(1)_ES9a
  15. Affected versionversion=12.0(1)
  16. Affected versionversion=12.0(1)_ES1
  17. Affected versionversion=12.0(1)_ES2
  18. Affected versionversion=12.0(1)_ES3
  19. Affected versionversion=12.0(1)_ES4
  20. Affected versionversion=12.0(1)_ES5
  21. Affected versionversion=12.0(1)_ES5a
  22. Affected versionversion=12.0(1)_ES6
  23. Affected versionversion=12.0(1)_ES6_ET1
  24. Affected versionversion=12.0(1)_ES6_ET2
  25. Affected versionversion=12.0(1)_ES6_ET3
  26. Affected versionversion=12.0(1)_ES7
  27. Affected versionversion=12.0(1)_ES7_ET1
  28. Affected versionversion=12.5(1)
  29. Affected versionversion=12.5(1)_ES1
  30. Affected versionversion=12.5(1)_ES2
  31. Affected versionversion=12.5(1)_ES3
  32. Affected versionversion=12.5(1)_ES3_ET1
  33. Affected versionversion=12.5(1)_ES3_ET2
  34. Affected versionversion=12.5(1)_ES4
  35. Affected versionversion=12.5(1)_ES4_ET1
  36. Affected versionversion=12.5(1)_ES5
  37. Affected versionversion=12.5(1)_ES5_ET1
  38. Affected versionversion=12.5(1)_ES6
  39. Affected versionversion=12.5(1)_ES7
  40. Affected versionversion=12.5(1)_ES8
  41. Affected versionversion=12.5(1)_ET1
  42. Affected versionversion=12.6(1)
  43. Affected versionversion=12.6(1)_ES1
  44. Affected versionversion=12.6(1)_ES1_ET1
  45. Affected versionversion=12.6(1)_ES2
  46. Affected versionversion=12.6(1)_ES3
  47. Affected versionversion=12.6(1)_ES4
  48. Affected versionversion=12.6(1)_ES4_ET1
  49. Affected versionversion=12.6(1)_ES5
  50. Affected versionversion=12.6(1)_ES5_ET1
  51. Affected versionversion=12.6(1)_ES5_ET2
  52. Affected versionversion=12.6(1)_ES6
  53. Affected versionversion=12.6(1)_ES6_ET1
  54. Affected versionversion=12.6(1)_ES6_ET2
  55. Affected versionversion=12.6(1)_ET1
  56. Affected versionversion=12.6(1)_ET2
  57. Affected versionversion=12.6(1)_ET3
  58. Affected versionversion=12.6_ES2_ET1
  59. Affected versionversion=12.6_ES2_ET2
  60. Affected versionversion=12.6_ES2_ET3
  61. Affected versionversion=12.6_ES2_ET4
  62. Affected versionversion=12.6_ES3_ET1
  63. Affected versionversion=12.6_ES3_ET2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ClamAV · Cisco Enterprise Chat and Emailversion=11.5(1); version=11.6(1); version=11.6(1)_ES10; version=11.6(1)_ES11; version=11.6(1)_ES12; version=11.6(1)_ES2; version=11.6(1)_ES3; version=11.6(1)_ES4; version=11.6(1)_ES5; version=11.6(1)_ES6; version=11.6(1)_ES7; version=11.6(1)_ES8; version=11.6(1)_ES9; version=11.6(1)_ES9a; version=12.0(1); version=12.0(1)_ES1; version=12.0(1)_ES2; version=12.0(1)_ES3; version=12.0(1)_ES4; version=12.0(1)_ES5; version=12.0(1)_ES5a; version=12.0(1)_ES6; version=12.0(1)_ES6_ET1; version=12.0(1)_ES6_ET2; version=12.0(1)_ES6_ET3; version=12.0(1)_ES7; version=12.0(1)_ES7_ET1; version=12.5(1); version=12.5(1)_ES1; version=12.5(1)_ES2; version=12.5(1)_ES3; version=12.5(1)_ES3_ET1; version=12.5(1)_ES3_ET2; version=12.5(1)_ES4; version=12.5(1)_ES4_ET1; version=12.5(1)_ES5; version=12.5(1)_ES5_ET1; version=12.5(1)_ES6; version=12.5(1)_ES7; version=12.5(1)_ES8; version=12.5(1)_ET1; version=12.6(1); version=12.6(1)_ES1; version=12.6(1)_ES1_ET1; version=12.6(1)_ES2; version=12.6(1)_ES3; version=12.6(1)_ES4; version=12.6(1)_ES4_ET1; version=12.6(1)_ES5; version=12.6(1)_ES5_ET1; version=12.6(1)_ES5_ET2; version=12.6(1)_ES6; version=12.6(1)_ES6_ET1; version=12.6(1)_ES6_ET2; version=12.6(1)_ET1; version=12.6(1)_ET2; version=12.6(1)_ET3; version=12.6_ES2_ET1; version=12.6_ES2_ET2; version=12.6_ES2_ET3; version=12.6_ES2_ET4; version=12.6_ES3_ET1; version=12.6_ES3_ET2

Published CVSS scores

5.4Cisco Systems, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001Malicious Link

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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